In Exercises 77-80, a linear function that models data is described. Find the slope of each model. Then describe what this means in terms of the rate of change of the dependent variable per unit change in the independent variable. 77. The linear function f(x) = 55.7x + 60.1 models the number of smartphones sold in the United States, f(x), in millions, x years after 2006. (Source: Newsweek, April 11, 2011) 78. The linear function f(x) = 2x + 10 models the amount, f(x), in billions of dollars, that the drug industry spent on marketing information about drugs to doctors x years after 2000. (Source: IMS Health) 79. The linear function f(x) = -0.52x + 24.7 models the percentage of U.S. adults who smoked cigarettes, f(x), x years after 1997. (Source: National Center for Health Statistics) 80. The linear function f(x) = -0.28x + 1.7 models the percentage of U.S. taxpayers who were audited by the IRS, f(x), x years after 1996. (Source: IRS)

In Exercises 77-80, a linear function that models data is described. Find the slope of each model. Then describe what this means in terms of the rate of change of the dependent variable per unit change in the independent variable. 77. The linear function f(x) = 55.7x + 60.1 models the number of smartphones sold in the United States, f(x), in millions, x years after 2006. (Source: Newsweek, April 11, 2011) 78. The linear function f(x) = 2x + 10 models the amount, f(x), in billions of dollars, that the drug industry spent on marketing information about drugs to doctors x years after 2000. (Source: IMS Health) 79. The linear function f(x) = -0.52x + 24.7 models the percentage of U.S. adults who smoked cigarettes, f(x), x years after 1997. (Source: National Center for Health Statistics) 80. The linear function f(x) = -0.28x + 1.7 models the percentage of U.S. taxpayers who were audited by the IRS, f(x), x years after 1996. (Source: IRS)

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

See similar textbooks

Related questions

Q: 65. Let f and g be linear functions with equations f(x) = mx + b₁ and g(x) = m₂x + b2. Is fo g also…

Q: Kyra earns $16 per hour at her job. Is her gross pay a linear function of the number of hours she…

A: It is given that Kyra earns $16 per hour at her job. Let, Kyra works h hour and her gross pay be P.

Q: A В y = 2x + 5 5 3 1 -6 -4 -3 -2 -1 1 2. 3 4 5 6 -1 -2 -3 -5 D y = -4x + 2 3 1 -6 -5 -4 -3 -2 -1 1 3…

Q: graph of Function 1 to complete the table. Function 1 uations of 3 other functions are given below.…

Q: The sales of LCD TV sets are shown in the table on the right for various years. Let s be the sales…

Q: Write the equation of a vertical line that passes through (5, 6). Your answer What is the equation…

A: We have to find slope and equation of linear function

Q: characteristics

A: For slope to be zero, the line should be parallel to x axis. So I'm providing hand written solution…

Q: 6. Several functions represent different savings account plans. Which functions are linear? Show…

Q: 00- 66.6 67.4 69.8 70.9 74.3 75.4 50-

Q: Use the graph of the function f(x) = 0.5x +1 to find the value of y when x = 4. *

A: Given : f(x) =0.5x + 1 Let y = f(x) = 0.5x + 1 ...(1) To find:…

Q: Exercises 51 and 52: State the slope of the graph of f. 51. f(x) = 7 52. f(x) = x - %3D

A: We have to find slope of the graph of given function f: 51. fx=752. fx=13x-23 We know that for any…

Q: The rate of change in the number of patients with Crimean-Congo Hemorrhage V(t) for 2014 is…

A: The rate of change in the number of patients with Crimean-Congo Hemorrhage V(t) for 2014 is…

Q: Create a table of values with x values of {5, 7, 9, 11} and corresponding y values of (35.5, 48.5,…

Q: A group of climbers begin climbing at an elevation of 4000 feet and ascend at a steady rate of 1500…

Q: Formulate a linear equation given: o Slope and y-intercept m = -2, b = 3

A: 1-Given- m=-2, b=3 To Find- The equation of the above line . Concept Used- The slope intercept form…

Q: a. Use slope-intercept form to write an equation of the line that passes through the given point and…

Q: Exercises 47-50: Write a formula for a linear function f whose graph satisfies the conditions. 47.…

A: A linear function in variable x is a function of the form f(x)=ax+b. So, that f(x) is linear in x.…

Q: A high school basketball team notices that attendance at its games changes at a constant rate based…

A: from the given data in the question , number of games lost number of people attended the game…

Q: 143. Online Shopping In 2011 online sales were $192 billion, and in 2014 they were $249 billion.…

Q: The growth rate of the speed of sound in relation to the temperature in degrees Fahrenheit is a…

A: Let t be the temperature in degrees Fahrenheit, and yt be the speed of sound. First find the linear…

Question

In Exercises 77-80, a linear function that models data is
described. Find the slope of each model. Then describe what
this means in terms of the rate of change of the dependent
variable per unit change in the independent variable.
77. The linear function f(x) = 55.7x + 60.1 models the
number of smartphones sold in the United States, f(x),
in millions, x years after 2006. (Source: Newsweek, April 11,
2011)
78. The linear function f(x) = 2x + 10 models the amount,
f(x), in billions of dollars, that the drug industry spent
on marketing information about drugs to doctors x years
after 2000. (Source: IMS Health)
79. The linear function f(x) = -0.52x + 24.7 models the
percentage of U.S. adults who smoked cigarettes, f(x),
x years after 1997. (Source: National Center for Health Statistics)
80. The linear function f(x) = -0.28x + 1.7 models the
percentage of U.S. taxpayers who were audited by the
IRS, f(x), x years after 1996. (Source: IRS)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Marijuana Use The function that models the percentof high school seniors using marijuana once or morein the prior 12 months is y = 0.0123x3 - 0.497x2 +5.95x + 14.9 , where x equals the number of yearsafter 1990. Is this a linear function? Why or why not?(Source: Monitoringthefuture.com)
What is the slope of this table
You will need to rent a computer and the cost will be $30 down and $15 a day. You sign a contract and you must pay the $30 down whether you rent the computer or not. Is this a linear function? Explain. What is the rate of change? What is the practical meaning (in context of the problem) of the rate of change? What is the vertical intercept? What is the practical meaning of the vertical intercept? Write the equation using function notation. What is the practical domain of the function? What is the practical range of the function?
Appiication probiem witira The height (in centimeters) of a candie is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a ine with a slope of -0.4. See the figure below. Suppose that the height of the candle after 16 hours is 16.6 centimeters. What will be the height of the candie after 23 hours? Candle height 166 centimeters (in cm) Burning time (in hours) Explanation Check Com 20 MIG HELLC A Sm
Español Suppose that the credit remaining on a phone card (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of - 0.12. See the figure below. There is $32.40 in credit remaining on the card after 20 minutes of calls. How much credit will there be after 33 minutes of calls? Aa Remaining credit 32.40 ? (in dollars) 20 Calling time (in minutes)
Linear regression always gives a linear function with a possible slope? True or False? If five dollars is added to a cookie jar each week, then the amount of money in the cookie jar is a linear function of time with the slope of five per week? True or false?
The linear function f(x) =-0.28x + 1.7 models the percentage of U.S. taxpayers who were audited by the IRS, f(x), * years after 1996. (Source: IRS) Find the slope of the model. Then describe what this means in terms of the rate of change of the dependent variable per unit change in the independent variable. f(x)= 0.28x + 1.7=0 Solve for x: