College Algebra
10th Edition
ISBN: 9781337282291
Author: Ron Larson
Publisher: Cengage Learning
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Textbook Question
Chapter 3.5, Problem 57E
Finding a Mathematical Model In Exercises 53-60, find a mathematical model that represents the statement. (Determine the constant of proportionality.)
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Think About the Process At the speed of 50 miles per hour (mph), a car's fuel efficiency is 45 miles per gallon (mpg) of gasoline. For every mile per hour over 50,
the car loses 3% of its fuel efficiency. Draw a graph to model the situation. How can you tell if the graph represents a proportional relationship? Is the change in the
car's fuel efficiency proportional to the car's speed?
O A
OB.
OC.
Fuel Efficiency
Fuel Efficiency
Fuel Efficiency
45
45
0
3 30-
30-
- -15-
15-
15-
-30-
....
0-
10
Speed Over 50 mph
-45-
Speed Over 50 mph
10
Speed Over 50 mph
What is one way to tell if the graph represents a proportional relationship?
O A. The graph will be a line.
O B. The graph will pass through the origin
O C. The graph will be a line that passes through the origin.
O D. The graph will be a curve not a line
Is the change in the car's fuel efficiency proportional to the car's speed?
Yes
No
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Question 3
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The table shows the distance, in miles, that a person is from home.
Complete parts (a) and (b) below.
(a) Fill in the table, assuming it represents a linear function.
Time, x,
D, Distance
(hours)
(miles)
Number
1
60
50
3
40
4
Number
(b) Write a formula which gives D as a function of x.
D=
Find a mathematical model that represents the statement. (Determine the constant of proportionality.)
A varies directly as r2. (A = 9T when r =
Chapter 3 Solutions
College Algebra
Ch. 3.1 - Sketch the graph of each quadratic function and...Ch. 3.1 - Prob. 2ECPCh. 3.1 - Sketch the graph of f(x)=x24x+3. Identify the...Ch. 3.1 - Write the standard form of the quadratic function...Ch. 3.1 - Rework Example 5 when the path of the baseball is...Ch. 3.1 - Prob. 1ECh. 3.1 - Fill in the blanks. A polynomial function of x...Ch. 3.1 - Fill in the blanks. A function is a second-degree...Ch. 3.1 - Fill in the blanks. When the graph of a quadratic...Ch. 3.1 - In Exercises 5-8, match the quadratic function...
Ch. 3.1 - In Exercises 5-8, match the quadratic function...Ch. 3.1 - In Exercises 5-8, match the quadratic function...Ch. 3.1 - In Exercises 5-8, match the quadratic function...Ch. 3.1 - Sketching Graphs of Quadratic Functions In...Ch. 3.1 - Sketching Graphs of Quadratic Functions In...Ch. 3.1 - Sketching Graphs of Quadratic Functions In...Ch. 3.1 - Sketching Graphs of Quadratic Functions In...Ch. 3.1 - In Exercises 13-26, write the quadratic function...Ch. 3.1 - In Exercises 13-26, write the quadratic function...Ch. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Prob. 19ECh. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Prob. 21ECh. 3.1 - Prob. 22ECh. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Prob. 24ECh. 3.1 - Using Standard Form to Graph a Parabola In...Ch. 3.1 - Prob. 26ECh. 3.1 - In Exercises 27-34, use a graphing utility to...Ch. 3.1 - In Exercises 27-34, use a graphing utility to...Ch. 3.1 - In Exercises 27-34, use a graphing utility to...Ch. 3.1 - In Exercises 27-34, use a graphing utility to...Ch. 3.1 - In Exercises 27-34, use a graphing utility to...Ch. 3.1 - Prob. 32ECh. 3.1 - Prob. 33ECh. 3.1 - Prob. 34ECh. 3.1 - In Exercises 35 and 36, write the standard form of...Ch. 3.1 - In Exercises 35 and 36, write the standard form of...Ch. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Prob. 40ECh. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Prob. 42ECh. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Prob. 44ECh. 3.1 - Writing a Quadratic Function In Exercises 37-46,...Ch. 3.1 - Prob. 46ECh. 3.1 - In Exercises 47-50, determine the x-intercept(s)...Ch. 3.1 - Graphical Reasoning In Exercises 47-50, determine...Ch. 3.1 - Graphical Reasoning In Exercises 47-50, determine...Ch. 3.1 - Prob. 50ECh. 3.1 - Prob. 51ECh. 3.1 - Prob. 52ECh. 3.1 - Prob. 53ECh. 3.1 - Prob. 54ECh. 3.1 - Prob. 55ECh. 3.1 - Prob. 56ECh. 3.1 - In Exercises 57-62, find two quadratic functions,...Ch. 3.1 - In Exercises 57-62, find two quadratic functions,...Ch. 3.1 - In Exercises 57-62, find two quadratic functions,...Ch. 3.1 - In Exercises 57-62, find two quadratic functions,...Ch. 3.1 - In Exercises 57-62, find two quadratic functions,...Ch. 3.1 - Prob. 62ECh. 3.1 - Prob. 63ECh. 3.1 - Prob. 64ECh. 3.1 - In Exercises 63-66, find two positive real numbers...Ch. 3.1 - In Exercises 63-66, find two positive real numbers...Ch. 3.1 - Path of a Diver The path of a diver is modeled by...Ch. 3.1 - Height of a Ball The path of a punted football is...Ch. 3.1 - Minimum Cost A manufacturer of lighting fixtures...Ch. 3.1 - Maximum Profit The profit P (in hundreds of...Ch. 3.1 - Maximum Revenue The total revenue R earned (in...Ch. 3.1 - Maximum Revenue The total revenue R earned per day...Ch. 3.1 - Maximum Area A rancher has 200 feet of fencing to...Ch. 3.1 - Maximum Area A Norman window is constructed by...Ch. 3.1 - Prob. 75ECh. 3.1 - Prob. 76ECh. 3.1 - Prob. 77ECh. 3.1 - Prob. 78ECh. 3.1 - Prob. 79ECh. 3.1 - The graph shows a quadratic function of the form...Ch. 3.1 - Proof Assume that the function f(x)=ax2+bx+c,a0...Ch. 3.2 - Sketch the graph of each function....Ch. 3.2 - Describe the left-hand and right-hand behavior of...Ch. 3.2 - Prob. 3ECPCh. 3.2 - Prob. 4ECPCh. 3.2 - Prob. 5ECPCh. 3.2 - Prob. 6ECPCh. 3.2 - Fill in the blanks. The graph of a polynomial...Ch. 3.2 - Fill in the blanks. The is used to determine...Ch. 3.2 - Fill in the blanks. A polynomial function of...Ch. 3.2 - Fill in the blanks. When x=a is a zero of a...Ch. 3.2 - Fill in the blanks. When a real zero xa of a...Ch. 3.2 - Fill in the blanks. A factor xak,k1, yields a ...Ch. 3.2 - Fill in the blanks. A polynomial function is...Ch. 3.2 - Fill in the blanks. The Theorem states that if fis...Ch. 3.2 - In Exercises 9-14, match the polynomial function...Ch. 3.2 - Prob. 10ECh. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - In Exercises 9-14, match the polynomial function...Ch. 3.2 - In Exercises 9-14, match the polynomial function...Ch. 3.2 - Sketching Transformations of Monomial Functions In...Ch. 3.2 - Prob. 16ECh. 3.2 - Sketching Transformations of Monomial Functions In...Ch. 3.2 - Prob. 18ECh. 3.2 - Applying the Leading Coefficient Test In Exercises...Ch. 3.2 - Applying the Leading Coefficient Test In Exercises...Ch. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - In Exercises 29-32, use a graphing utility to...Ch. 3.2 - In Exercises 29-32, use a graphing utility to...Ch. 3.2 - In Exercises 29-32, use a graphing utility to...Ch. 3.2 - In Exercises 29-32, use a graphing utility to...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - In Exercises 33-48, (a) find all real zeros of the...Ch. 3.2 - In Exercises 33-48, (a) find all real zeros of the...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Finding Real Zeros of a Polynomial Function In...Ch. 3.2 - Using Technology In Exercises 49-52, (a). use a...Ch. 3.2 - Using Technology In Exercises 49-52, (a). use a...Ch. 3.2 - Using Technology In Exercises 49-52, (a). use a...Ch. 3.2 - Using Technology In Exercises 49-52, (a). use a...Ch. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - In Exercises 53-62, find a polynomial function...Ch. 3.2 - Prob. 56ECh. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Prob. 58ECh. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Finding a Polynomial Function In Exercises 53-62,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Finding a Polynomial Function In Exercises 63-70,...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Prob. 72ECh. 3.2 - Prob. 73ECh. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Prob. 79ECh. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Prob. 81ECh. 3.2 - Prob. 82ECh. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Sketching the Graph of a Polynomial Function In...Ch. 3.2 - Using Technology In Exercises 85-88, use a...Ch. 3.2 - Prob. 86ECh. 3.2 - Prob. 87ECh. 3.2 - Prob. 88ECh. 3.2 - Prob. 89ECh. 3.2 - Using the Intermediate Value Theorem In Exercises...Ch. 3.2 - Prob. 91ECh. 3.2 - Prob. 92ECh. 3.2 - Maximum Volume You construct an open box from a...Ch. 3.2 - Maximum Volume You construct an open box with...Ch. 3.2 - Revenue The revenue R (in millions of dollars) for...Ch. 3.2 - Revenue The revenue R (in millions of dollars) for...Ch. 3.2 - Prob. 97ECh. 3.2 - Arboriculture The growth of a red oak tree is...Ch. 3.2 - True or False? In Exercises 99-102, determine...Ch. 3.2 - True or False? In Exercises 99-102, determine...Ch. 3.2 - True or False? In Exercises 99-102, determine...Ch. 3.2 - True or False? In Exercises 99-102, determine...Ch. 3.2 - Modeling Polynomials Sketch the graph of a...Ch. 3.2 - Modeling Polynomials Sketch the graph of a...Ch. 3.2 - Graphical Reasoning Sketch the graph of the...Ch. 3.2 - For each graph, describe a polynomial function...Ch. 3.2 - Prob. 107ECh. 3.3 - Divide the polynomial 9x3+36x249x196byx+4,and use...Ch. 3.3 - Divide x32x29byx3.Check the result.Ch. 3.3 - Prob. 3ECPCh. 3.3 - Prob. 4ECPCh. 3.3 - Prob. 5ECPCh. 3.3 - Prob. 6ECPCh. 3.3 - Two forms of the Division Algorithm are shown...Ch. 3.3 - In Exercises 2-6, fill in the blanks. In the...Ch. 3.3 - In Exercises 2-6, fill in the blanks. In the...Ch. 3.3 - In Exercises 2-6, fill in the blanks. A shortcut...Ch. 3.3 - In Exercises 2-6, fill in the blanks. The Theorem...Ch. 3.3 - In Exercises 2-6, fill in the blanks. The Theorem...Ch. 3.3 - Using the Division Algorithm In Exercises 7 and 8,...Ch. 3.3 - Using the Division Algorithm In Exercises 7 and 8,...Ch. 3.3 - Using Technology In Exercises 9 and 10, (a) use a...Ch. 3.3 - Prob. 10ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 14ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 16ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 18ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 20ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 22ECh. 3.3 - Long Division of Polynomials In Exercises 11-24,...Ch. 3.3 - Prob. 24ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 28ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 30ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 32ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 34ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 36ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 38ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 40ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 42ECh. 3.3 - Using Synthetic Division In Exercises 25-44, use...Ch. 3.3 - Prob. 44ECh. 3.3 - Using the Remainder Theorem In Exercises 45-50,...Ch. 3.3 - Using the Remainder Theorem In Exercises 45-50,...Ch. 3.3 - Using the Remainder Theorem In Exercises 45-50,...Ch. 3.3 - Prob. 48ECh. 3.3 - Using the Remainder Theorem In Exercises 45-50,...Ch. 3.3 - Prob. 50ECh. 3.3 - Using the Remainder Theorem In Exercises 51-54,...Ch. 3.3 - Prob. 52ECh. 3.3 - Using the Remainder Theorem In Exercises 51-54,...Ch. 3.3 - Prob. 54ECh. 3.3 - Using the Factor Theorem In Exercises 55-62, use...Ch. 3.3 - Using the Factor Theorem In Exercises 55-62, use...Ch. 3.3 - Using the Factor Theorem In Exercises 55-62, use...Ch. 3.3 - Prob. 58ECh. 3.3 - Using the Factor Theorem In Exercises 55-62, use...Ch. 3.3 - Prob. 60ECh. 3.3 - Using the Factor Theorem In Exercises 55-62, use...Ch. 3.3 - Prob. 62ECh. 3.3 - Factoring a Polynomial In Exercises 63-70, (a)...Ch. 3.3 - Prob. 64ECh. 3.3 - Factoring a Polynomial In Exercises 63-70, (a)...Ch. 3.3 - Factoring a Polynomial In Exercises 63-70, (a)...Ch. 3.3 - Factoring a Polynomial In Exercises 63-70, (a)...Ch. 3.3 - Prob. 68ECh. 3.3 - Factoring a Polynomial In Exercises 63-70, (a)...Ch. 3.3 - Prob. 70ECh. 3.3 - Approximating Zeros In Exercises 71-76, (a) use...Ch. 3.3 - Prob. 72ECh. 3.3 - Approximating Zeros In Exercises 71-76, (a) use...Ch. 3.3 - Prob. 74ECh. 3.3 - Prob. 75ECh. 3.3 - Prob. 76ECh. 3.3 - Prob. 77ECh. 3.3 - Prob. 78ECh. 3.3 - Prob. 79ECh. 3.3 - Prob. 80ECh. 3.3 - Profit A company that produces calculators...Ch. 3.3 - Lyme Disease The numbers Nof confirmed cases of...Ch. 3.3 - True or False? In Exercises 83-86, determine...Ch. 3.3 - True or False? In Exercises 83-86, determine...Ch. 3.3 - True or False? In Exercises 83-86, determine...Ch. 3.3 - Prob. 86ECh. 3.3 - Think About It In Exercises 87 and 88, perform the...Ch. 3.3 - Think About It In Exercises 87 and 88, perform the...Ch. 3.3 - Error Analysis Describe the error. Use synthetic...Ch. 3.3 - HOW DO YOU SEE IT? The graph below shows a...Ch. 3.3 - Exploration In Exercises 91 and 92, find the...Ch. 3.3 - Exploration In Exercises 91 and 92, find the...Ch. 3.3 - Think About It Find the value of k such that x4is...Ch. 3.4 - Determine the number of zeros of the polynomial...Ch. 3.4 - Prob. 2ECPCh. 3.4 - Prob. 3ECPCh. 3.4 - Find the rational zeros of fx=2x3+x213x+6.Ch. 3.4 - Find all real solutions of 2x35x2+15x+18=0.Ch. 3.4 - Find a fourth-degree polynomial function f with...Ch. 3.4 - Find the quartic (fourth-degree) polynomial...Ch. 3.4 - Prob. 8ECPCh. 3.4 - Prob. 9ECPCh. 3.4 - Prob. 10ECPCh. 3.4 - Find all real zeros of fx=8x34x2+6x3.Ch. 3.4 - Prob. 12ECPCh. 3.4 - Prob. 1ECh. 3.4 - Prob. 2ECh. 3.4 - Prob. 3ECh. 3.4 - Prob. 4ECh. 3.4 - Prob. 5ECh. 3.4 - Prob. 6ECh. 3.4 - Prob. 7ECh. 3.4 - Prob. 8ECh. 3.4 - Zeros of Polynomial Functions In Exercises 9-14,...Ch. 3.4 - Prob. 10ECh. 3.4 - Prob. 11ECh. 3.4 - Zeros of Polynomial Functions In Exercises 9-14,...Ch. 3.4 - Prob. 13ECh. 3.4 - Prob. 14ECh. 3.4 - Using the Rational Zero Test In Exercises 15-18,...Ch. 3.4 - Prob. 16ECh. 3.4 - Prob. 17ECh. 3.4 - Prob. 18ECh. 3.4 - Using the Rational Zero Test In Exercises 19-28,...Ch. 3.4 - Using the Rational Zero Test In Exercises 19-28,...Ch. 3.4 - Prob. 21ECh. 3.4 - Prob. 22ECh. 3.4 - Using the Rational Zero Test In Exercises 19-28,...Ch. 3.4 - Prob. 24ECh. 3.4 - Using the Rational Zero Test In Exercises 19-28,...Ch. 3.4 - Prob. 26ECh. 3.4 - Prob. 27ECh. 3.4 - Prob. 28ECh. 3.4 - Prob. 29ECh. 3.4 - Solving a Polynomial Equation In Exercises 29-32,...Ch. 3.4 - Solving a Polynomial Equation In Exercises 29-32,...Ch. 3.4 - Prob. 32ECh. 3.4 - Using the Rational Zero Test In Exercises 33-36,...Ch. 3.4 - Using the Rational Zero Test In Exercises 33-36,...Ch. 3.4 - Prob. 35ECh. 3.4 - Prob. 36ECh. 3.4 - Using the Rational Zero Test In Exercises 37-40,...Ch. 3.4 - Prob. 38ECh. 3.4 - Prob. 39ECh. 3.4 - Prob. 40ECh. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Prob. 42ECh. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Prob. 44ECh. 3.4 - Prob. 45ECh. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Finding a Polynomial Function with Given Zeros In...Ch. 3.4 - Prob. 51ECh. 3.4 - Factoring a Polynomial In Exercises 51-54, write...Ch. 3.4 - Prob. 53ECh. 3.4 - Factoring a Polynomial In Exercises 51-54, write...Ch. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 57ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 59ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 61ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 63ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 65ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 67ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 69ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 73ECh. 3.4 - Finding the Zeros of a Polynomial Function In...Ch. 3.4 - Prob. 75ECh. 3.4 - Prob. 76ECh. 3.4 - Prob. 77ECh. 3.4 - Prob. 78ECh. 3.4 - Prob. 79ECh. 3.4 - Using Descartes’s Rule of Signs In Exercises...Ch. 3.4 - Prob. 81ECh. 3.4 - Using Descartes’s Rule of Signs In Exercises...Ch. 3.4 - Prob. 83ECh. 3.4 - Using Descartes’s Rule of Signs In Exercises...Ch. 3.4 - Prob. 85ECh. 3.4 - Prob. 86ECh. 3.4 - Prob. 87ECh. 3.4 - Prob. 88ECh. 3.4 - Prob. 89ECh. 3.4 - Prob. 90ECh. 3.4 - Prob. 91ECh. 3.4 - Prob. 92ECh. 3.4 - Prob. 93ECh. 3.4 - Prob. 94ECh. 3.4 - Prob. 95ECh. 3.4 - Prob. 96ECh. 3.4 - Prob. 97ECh. 3.4 - Prob. 98ECh. 3.4 - Prob. 99ECh. 3.4 - Prob. 100ECh. 3.4 - Prob. 101ECh. 3.4 - Prob. 102ECh. 3.4 - Geometry You want to make an open box from a...Ch. 3.4 - Geometry A rectangular package to be sent by a...Ch. 3.4 - Prob. 105ECh. 3.4 - Prob. 106ECh. 3.4 - Prob. 107ECh. 3.4 - Prob. 108ECh. 3.4 - Prob. 109ECh. 3.4 - Prob. 110ECh. 3.4 - Prob. 111ECh. 3.4 - Prob. 112ECh. 3.4 - Prob. 113ECh. 3.4 - Prob. 114ECh. 3.4 - Prob. 115ECh. 3.4 - Think About It Sketch the graph of a fifth-degree...Ch. 3.4 - Writing an Equation In Exercises 117 and 118, the...Ch. 3.4 - Prob. 118ECh. 3.4 - Prob. 119ECh. 3.4 - Prob. 120ECh. 3.4 - Prob. 121ECh. 3.4 - Prob. 122ECh. 3.4 - Prob. 123ECh. 3.5 - The ordered pairs below give the median sales...Ch. 3.5 - Prob. 2ECPCh. 3.5 - The simple interest on an investment is directly...Ch. 3.5 - Neglecting air resistance, the distance s an...Ch. 3.5 - Prob. 5ECPCh. 3.5 - The resistance of a copper wire carrying an...Ch. 3.5 - The kinetic energy E of an object varies jointly...Ch. 3.5 - Fill in the blanks. Two techniques for fitting...Ch. 3.5 - Fill in the blanks. Statisticians use a measure...Ch. 3.5 - Fill in the blanks. The linear model with the...Ch. 3.5 - Fill in the blanks. An r-value, or, of a set of...Ch. 3.5 - Fill in the blanks. The direct variation model...Ch. 3.5 - Fill in the blanks. The mathematical model y=2xis...Ch. 3.5 - Fill in the blanks. Mathematical models that...Ch. 3.5 - Fill in the blanks. The joint variation model...Ch. 3.5 - Mathematical Models In Exercises 9 and 10, (a)...Ch. 3.5 - Mathematical Models In Exercises 9 and 10, (a)...Ch. 3.5 - Sketching a Line In Exercises 11-16, sketch the...Ch. 3.5 - Prob. 12ECh. 3.5 - Sketching a Line In Exercises 11-16, sketch the...Ch. 3.5 - Sketching a Line In Exercises 11-16, sketch the...Ch. 3.5 - Sketching a Line In Exercises 11-16, sketch the...Ch. 3.5 - Sketching a Line In Exercises 11-16, sketch the...Ch. 3.5 - Sports The ordered pairs below give the winning...Ch. 3.5 - Broadway The ordered pairs below give the starting...Ch. 3.5 - Direct Variation In Exercises 19-24, find a direct...Ch. 3.5 - Prob. 20ECh. 3.5 - Direct Variation In Exercises 19-24, find a direct...Ch. 3.5 - Prob. 22ECh. 3.5 - Direct Variation In Exercises 19-24, find a direct...Ch. 3.5 - Direct Variation In Exercises 19-24, find a direct...Ch. 3.5 - Direct Variation as an nthPower In Exercises...Ch. 3.5 - Prob. 26ECh. 3.5 - Direct Variation as an nthPower In Exercises...Ch. 3.5 - Direct Variation as an nthPower In Exercises...Ch. 3.5 - Inverse Variation as an nth Power In Exercises...Ch. 3.5 - Prob. 30ECh. 3.5 - Inverse Variation as an nth Power In Exercises...Ch. 3.5 - Prob. 32ECh. 3.5 - Think About It In Exercises 33 and 34, use the...Ch. 3.5 - Think About It In Exercises 33 and 34, use the...Ch. 3.5 - Determining Variation In Exercises 35-38,...Ch. 3.5 - Prob. 36ECh. 3.5 - Determining Variation In Exercises 35-38,...Ch. 3.5 - Determining Variation In Exercises 35-38,...Ch. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Prob. 40ECh. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Prob. 42ECh. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Prob. 44ECh. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Prob. 46ECh. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Finding a Mathematical Model In Exercises 39-48,...Ch. 3.5 - Describing a Formula In Exercises 49-52, use...Ch. 3.5 - Prob. 50ECh. 3.5 - Describing a Formula In Exercises 49-52, use...Ch. 3.5 - Describing a Formula In Exercises 49-52, use...Ch. 3.5 - Finding a Mathematical Model In Exercises 53-60,...Ch. 3.5 - Prob. 54ECh. 3.5 - Finding a Mathematical Model In Exercises 53-60,...Ch. 3.5 - Prob. 56ECh. 3.5 - Finding a Mathematical Model In Exercises 53-60,...Ch. 3.5 - Prob. 58ECh. 3.5 - Finding a Mathematical Model In Exercises 53-60,...Ch. 3.5 - Prob. 60ECh. 3.5 - Simple Interest The simple interest on an...Ch. 3.5 - Prob. 62ECh. 3.5 - Measurement Use the fact that 13 inches is...Ch. 3.5 - Measurement Use the fact that 14 gallons is...Ch. 3.5 - Hooke’s Law In Exercises 65-68, use Hooke’s Law,...Ch. 3.5 - Hooke’s Law In Exercises 65-68, use Hooke’s Law,...Ch. 3.5 - Hooke’s Law In Exercises 65-68, use Hooke’s Law,...Ch. 3.5 - Hooke’s Law In Exercises 65-68, use Hooke’s Law,...Ch. 3.5 - Ecology The diameter of the largest particle that...Ch. 3.5 - Work The work W required to lift an object varies...Ch. 3.5 - Prob. 71ECh. 3.5 - Prob. 72ECh. 3.5 - Music The fundamental frequency (in hertz) of a...Ch. 3.5 - Beam Load The maximum load that a horizontal beam...Ch. 3.5 - Prob. 75ECh. 3.5 - Prob. 76ECh. 3.5 - Prob. 77ECh. 3.5 - HOW DO YOU SEE IT? Discuss how well a linear model...Ch. 3.5 - Prob. 79ECh. 3 - Prob. 1RECh. 3 - Prob. 2RECh. 3 - Prob. 3RECh. 3 - Prob. 4RECh. 3 - Prob. 5RECh. 3 - Prob. 6RECh. 3 - Prob. 7RECh. 3 - Prob. 8RECh. 3 - Prob. 9RECh. 3 - Prob. 10RECh. 3 - Using Standard Form to Graph a Parabola In...Ch. 3 - Prob. 12RECh. 3 - Prob. 13RECh. 3 - Prob. 14RECh. 3 - Prob. 15RECh. 3 - Prob. 16RECh. 3 - Prob. 17RECh. 3 - Prob. 18RECh. 3 - Prob. 19RECh. 3 - Prob. 20RECh. 3 - Prob. 21RECh. 3 - Geometry The perimeter of a rectangle is...Ch. 3 - Maximum Revenue The total revenue R earned (in...Ch. 3 - Prob. 24RECh. 3 - Prob. 25RECh. 3 - Maximum Revenue A small theater has a seating...Ch. 3 - Prob. 27RECh. 3 - Prob. 28RECh. 3 - Prob. 29RECh. 3 - Prob. 30RECh. 3 - Prob. 31RECh. 3 - Prob. 32RECh. 3 - Prob. 33RECh. 3 - Prob. 34RECh. 3 - Prob. 35RECh. 3 - Prob. 36RECh. 3 - Prob. 37RECh. 3 - Finding Real Zeros of a Polynomial Function In...Ch. 3 - Prob. 39RECh. 3 - Prob. 40RECh. 3 - Prob. 41RECh. 3 - Prob. 42RECh. 3 - Prob. 43RECh. 3 - Prob. 44RECh. 3 - Prob. 45RECh. 3 - Prob. 46RECh. 3 - Using the Intermediate Value Theorem In Exercises...Ch. 3 - Prob. 48RECh. 3 - Prob. 49RECh. 3 - Using the Intermediate Value Theorem In Exercises...Ch. 3 - Prob. 51RECh. 3 - Prob. 52RECh. 3 - Prob. 53RECh. 3 - Prob. 54RECh. 3 - Prob. 55RECh. 3 - Prob. 56RECh. 3 - Prob. 57RECh. 3 - Using Synthetic Division In Exercises 57-60, use...Ch. 3 - Using Synthetic Division In Exercises 57-60, use...Ch. 3 - Prob. 60RECh. 3 - Prob. 61RECh. 3 - Prob. 62RECh. 3 - Prob. 63RECh. 3 - Prob. 64RECh. 3 - Prob. 65RECh. 3 - Prob. 66RECh. 3 - Prob. 67RECh. 3 - Prob. 68RECh. 3 - Prob. 69RECh. 3 - Prob. 70RECh. 3 - Prob. 71RECh. 3 - Prob. 72RECh. 3 - Prob. 73RECh. 3 - Prob. 74RECh. 3 - Using the Rational Zero Test In Exercises 75-80,...Ch. 3 - Prob. 76RECh. 3 - Prob. 77RECh. 3 - Prob. 78RECh. 3 - Prob. 79RECh. 3 - Prob. 80RECh. 3 - Prob. 81RECh. 3 - Prob. 82RECh. 3 - Prob. 83RECh. 3 - Prob. 84RECh. 3 - Prob. 85RECh. 3 - Prob. 86RECh. 3 - Prob. 87RECh. 3 - Prob. 88RECh. 3 - Prob. 89RECh. 3 - Prob. 90RECh. 3 - Prob. 91RECh. 3 - Prob. 92RECh. 3 - Using Descartes’s Rule of Signs In Exercises 93...Ch. 3 - Prob. 94RECh. 3 - Prob. 95RECh. 3 - Prob. 96RECh. 3 - Prob. 97RECh. 3 - Prob. 98RECh. 3 - Prob. 99RECh. 3 - Prob. 100RECh. 3 - Measurement A billboard says that it is 12.5 miles...Ch. 3 - Energy The power P produced by a wind turbine is...Ch. 3 - Frictional Force The frictional force F between...Ch. 3 - Demand A company has found that the daily demand x...Ch. 3 - Prob. 105RECh. 3 - Cost The cost of constructing a wooden box with a...Ch. 3 - Prob. 107RECh. 3 - Prob. 108RECh. 3 - Prob. 109RECh. 3 - Prob. 110RECh. 3 - Writing Explain the connections between factors of...Ch. 3 - Prob. 1TCh. 3 - Prob. 2TCh. 3 - Write the standard form of the equation of the...Ch. 3 - The path of a ball is modeled by the function...Ch. 3 - Prob. 5TCh. 3 - Prob. 6TCh. 3 - Divide using synthetic division. 2x43x2+4x1x+2Ch. 3 - Use synthetic division to show that x=3 is a zero...Ch. 3 - In Exercises 9 and 10, find the rational zeros of...Ch. 3 - Prob. 10TCh. 3 - In Exercises 11 and 12, find a polynomial function...Ch. 3 - Prob. 12TCh. 3 - In Exercises 13 and 14, find all the zeros of the...Ch. 3 - In Exercises 13 and 14, find all the zeros of the...Ch. 3 - In Exercises 15-17, find a mathematical model that...Ch. 3 - In Exercises 15-17, find a mathematical model that...Ch. 3 - In Exercises 15-17, find a mathematical model that...Ch. 3 - Prob. 18TCh. 3 - Prob. 1PSCh. 3 - Prob. 2PSCh. 3 - Building a Quonset Hut Quonset huts were developed...Ch. 3 - Prob. 4PSCh. 3 - Prob. 5PSCh. 3 - Prob. 6PSCh. 3 - Sums and Products of Zeros (a) Complete the table....Ch. 3 - Prob. 8PSCh. 3 - Finding the Equation of a Parabola The parabola...Ch. 3 - Prob. 10PSCh. 3 - Prob. 11PSCh. 3 - Prob. 12PSCh. 3 - Finding Dimensions At a glassware factory, molten...
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- Finding a Mathematical Model In Exercises 53-60, find a mathematical model that represents the statement. (Determine the constant of proportionality.) P varies directly as x and inversely as the square of y. P=283whenx=42andy=9.arrow_forwardFinding a Mathematical Model In Exercises 39-48, find a mathematical model for the verbal statement. F varies directly as g and inversely as r2.arrow_forwardDirect Variation In Exercises 19-24, find a direct variation model that relates y and x. x=4,y=8arrow_forward
- Demand A company has found that the daily demand x for its boxes of chocolates is inversely proportional to the price p. When the price is $5, the demand is 800 boxes. Approximate the demand when the price is increased to $6.arrow_forwardIn Exercises 15-17, find a mathematical model that represents the statement. (Determine the constant of proportionality.) A varies jointly as xandy.A=500whenx=15andy=8.arrow_forwardRate of Change In Exercises 91 and 92, you are given the dollar value of a product in 2016 and the rate at which the value of the product is expected to change during the next 5 years. Use this information to write a linear equation that gives the dollar value V of the product in terms of the year t. (Let t=16 represent 2016. ) 2016ValueRate$3000$150decreaseperyeararrow_forward
- In Exercises 15-17, find a mathematical model that represents the statement. (Determine the constant of proportionality.) vvaries directly as the square root of s.v=24whens=16.arrow_forwardThe cost C, in dollars, of a prepaid cell phone call is proportional to the time t, in minutes, that the call lasts. The equation that represents this relationship for carrier A is C-0.15t. The table shows the relationship for carrier B. Which carrier has a lower unit rate? Time Cost (minutes) (dollars) 0.24 0.60 1.20 5n 10 30 3.60 Carrier A Carrier B Carrier A and Carrier B have the same unit rate The relationship can't be determinedarrow_forwardRange of an Airplane An air rescue plane averages300 miles per hour in still air. It carries enough fuel for5 hours of flying time. If, upon takeoff, it encounters ahead wind of 30 mi/h, how far can it fly and return safely?(Assume that the wind remains constant.)arrow_forward
- Think About It In Exercises 33 and 34, use the graph to determine whether y varies directly as some power of x or inversely as some power of x. Explain.arrow_forwardMeasurement Use the fact that 13 inches is approximately the same length as 33 centimeters to find a mathematical model that relates centimeters y to inches x. Then use the model to find the numbers of centimeters in 10 inches and 20 inches.arrow_forwardFill in the blanks. Mathematical models that involve both direct and inverse variation have variation.arrow_forward
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