College Algebra in Context with Applications for the Managerial, Life, and Social Sciences (5th Edition)
5th Edition
ISBN: 9780134179025
Author: Ronald J. Harshbarger, Lisa S. Yocco
Publisher: PEARSON
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Chapter 4.2, Problem 42E
Population of Children The following table gives the estimated population (in millions) of U.S. boys age 5 and under and U.S. girls age 5 and under in selected years.
A function that models the population (in millions) of U.S. boys age 5 and under t years after 1990 is B(t) = 0.0076t2 – 0.1752t + 10.705, and a function that models the population (in millions) of U.S. girls age 5 and under t years after 1990 is G(t) = 0.0064t2 – 0.1448t + 10.12.
a. Find the equation of a function that models the estimated U.S. population (in millions) of children age 5 and under t years after 1990.
b. Use the result of part (a) to estimate the U.S. population of children age 5 and under in 2003.
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Chapter 4 Solutions
College Algebra in Context with Applications for the Managerial, Life, and Social Sciences (5th Edition)
Ch. 4.1 - In Exercises 116, (a) sketch the graph of each...Ch. 4.1 - In Exercises 116, (a) sketch the graph of each...Ch. 4.1 - Prob. 3ECh. 4.1 - Prob. 4ECh. 4.1 - Prob. 5ECh. 4.1 - In Exercises 116, (a) sketch the graph of each...Ch. 4.1 - Prob. 7ECh. 4.1 - Prob. 8ECh. 4.1 - Prob. 9ECh. 4.1 - Prob. 10E
Ch. 4.1 - Prob. 11ECh. 4.1 - In Exercises 116, (a) sketch the graph of each...Ch. 4.1 - Prob. 13ECh. 4.1 - Prob. 14ECh. 4.1 - Prob. 15ECh. 4.1 - Prob. 16ECh. 4.1 - Prob. 17ECh. 4.1 - Prob. 18ECh. 4.1 - Prob. 19ECh. 4.1 - Prob. 20ECh. 4.1 - Prob. 21ECh. 4.1 - Prob. 22ECh. 4.1 - Prob. 23ECh. 4.1 - Prob. 24ECh. 4.1 - Prob. 25ECh. 4.1 - Prob. 26ECh. 4.1 - Prob. 27ECh. 4.1 - Prob. 28ECh. 4.1 - Prob. 29ECh. 4.1 - In Exercises 2932, write the equation of the...Ch. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - Prob. 33ECh. 4.1 - Prob. 34ECh. 4.1 - Prob. 35ECh. 4.1 - Prob. 36ECh. 4.1 - Prob. 37ECh. 4.1 - Prob. 38ECh. 4.1 - Prob. 39ECh. 4.1 - Prob. 40ECh. 4.1 - Prob. 41ECh. 4.1 - Prob. 42ECh. 4.1 - Prob. 43ECh. 4.1 - Prob. 44ECh. 4.1 - Prob. 45ECh. 4.1 - Prob. 46ECh. 4.1 - Prob. 47ECh. 4.1 - Prob. 48ECh. 4.1 - Prob. 49ECh. 4.1 - Prob. 50ECh. 4.1 - Prob. 51ECh. 4.1 - Prob. 52ECh. 4.1 - Determine whether each of the complete graphs in...Ch. 4.1 - Prob. 54ECh. 4.1 - Prob. 55ECh. 4.1 - Prob. 56ECh. 4.1 - Marijuana Use The number of millions of people age...Ch. 4.1 - Prob. 58ECh. 4.1 - Prob. 59ECh. 4.1 - Prob. 60ECh. 4.1 - Prob. 61ECh. 4.1 - Pollution The daily cost C (in dollars) of...Ch. 4.1 - Population Growth Suppose the population of a...Ch. 4.1 - Mortgages The balance owed y on a 50,000 mortgage...Ch. 4.1 - Personal Expenditures Personal consumption...Ch. 4.1 - Prob. 66ECh. 4.1 - Prob. 67ECh. 4.1 - Prob. 68ECh. 4.1 - Prob. 69ECh. 4.1 - Prob. 70ECh. 4.1 - Prob. 71ECh. 4.1 - Prob. 72ECh. 4.2 - In Exercises 18, find the following: (a) (f + g)...Ch. 4.2 - In Exercises 18, find the following: (a) (f + g)...Ch. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - Prob. 5ECh. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Prob. 8ECh. 4.2 - Prob. 9ECh. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Prob. 12ECh. 4.2 - Prob. 13ECh. 4.2 - Prob. 14ECh. 4.2 - Prob. 15ECh. 4.2 - Prob. 16ECh. 4.2 - Prob. 17ECh. 4.2 - Prob. 18ECh. 4.2 - Prob. 19ECh. 4.2 - Prob. 20ECh. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Prob. 24ECh. 4.2 - Profit Suppose that the total weekly cost for the...Ch. 4.2 - Prob. 26ECh. 4.2 - Revenue and Cost The total revenue function for...Ch. 4.2 - Prob. 28ECh. 4.2 - Prob. 29ECh. 4.2 - Revenue and Cost The total monthly revenue...Ch. 4.2 - Prob. 31ECh. 4.2 - Cost-Benefit Suppose that for a certain city the...Ch. 4.2 - Prob. 33ECh. 4.2 - Electronic Components The monthly cost of...Ch. 4.2 - Football Tickets At a certain school, the number...Ch. 4.2 - Prob. 36ECh. 4.2 - Prob. 37ECh. 4.2 - Prob. 38ECh. 4.2 - Prob. 39ECh. 4.2 - Profit A manufacturer of computers has monthly...Ch. 4.2 - Prob. 41ECh. 4.2 - Population of Children The following table gives...Ch. 4.2 - Prob. 43ECh. 4.2 - Prob. 44ECh. 4.2 - Shoe Sizes A womans shoe that is size x in Japan...Ch. 4.2 - Shoe Sizes A mans shoe that is size x in Britain...Ch. 4.2 - Exchange Rates On a certain date, each Japanese...Ch. 4.2 - Prob. 48ECh. 4.2 - Prob. 49ECh. 4.2 - Prob. 50ECh. 4.2 - Prob. 51ECh. 4.2 - Prob. 52ECh. 4.2 - Prob. 53ECh. 4.2 - Prob. 54ECh. 4.3 - In Exercises 1 and 2, determine if the function f...Ch. 4.3 - Prob. 2ECh. 4.3 - Prob. 3ECh. 4.3 - Prob. 4ECh. 4.3 - Prob. 5ECh. 4.3 - Prob. 6ECh. 4.3 - Prob. 7ECh. 4.3 - Prob. 8ECh. 4.3 - Prob. 9ECh. 4.3 - Prob. 10ECh. 4.3 - Prob. 11ECh. 4.3 - Prob. 12ECh. 4.3 - Prob. 13ECh. 4.3 - Prob. 14ECh. 4.3 - Prob. 15ECh. 4.3 - In Exercises 15 and 16, determine whether each...Ch. 4.3 - Prob. 17ECh. 4.3 - Prob. 18ECh. 4.3 - a. 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Do the...Ch. 4.3 - a.Write the inverse of g(x)=2x31. b.Do the values...Ch. 4.3 - Prob. 21ECh. 4.3 - Prob. 22ECh. 4.3 - Prob. 23ECh. 4.3 - Prob. 24ECh. 4.3 - Prob. 25ECh. 4.3 - Prob. 26ECh. 4.3 - Prob. 27ECh. 4.3 - Prob. 28ECh. 4.3 - Prob. 29ECh. 4.3 - Prob. 30ECh. 4.3 - Prob. 31ECh. 4.3 - Prob. 32ECh. 4.3 - Shoe Sizes If x is the size of a mans shoe in...Ch. 4.3 - Investments If x dollars are invested at 10% for 6...Ch. 4.3 - Currency Conversion Suppose the function that...Ch. 4.3 - Apparent Temperature If the outside temperature is...Ch. 4.3 - Prob. 37ECh. 4.3 - Body-Heat Loss The model for body-heat loss...Ch. 4.3 - Prob. 39ECh. 4.3 - Decoding Messages If we assign numbers to the...Ch. 4.3 - Prob. 41ECh. 4.3 - Social Security Numbers and Income Taxes Consider...Ch. 4.3 - Prob. 43ECh. 4.3 - Volume of a Cube The volume of a cube is f(x) = x3...Ch. 4.3 - Prob. 45ECh. 4.3 - Surface Area The surface area of a cube is...Ch. 4.3 - Internet Access Using data from 2009 through 2015,...Ch. 4.3 - 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In Exercises 2130, use algebraic methods to solve...Ch. 4.4 - In Exercises 2130, use algebraic methods to solve...Ch. 4.4 - In Exercises 3134, use graphical methods to solve...Ch. 4.4 - In Exercises 3134, use graphical methods to solve...Ch. 4.4 - Prob. 33ECh. 4.4 - Prob. 34ECh. 4.4 - In Exercises 3542, solve the inequalities by using...Ch. 4.4 - Prob. 36ECh. 4.4 - Prob. 37ECh. 4.4 - Prob. 38ECh. 4.4 - In Exercises 3542, solve the inequalities by using...Ch. 4.4 - Prob. 40ECh. 4.4 - Prob. 41ECh. 4.4 - Prob. 42ECh. 4.4 - Prob. 43ECh. 4.4 - Prob. 44ECh. 4.4 - Prob. 45ECh. 4.4 - Prob. 46ECh. 4.4 - Prob. 47ECh. 4.4 - Prob. 48ECh. 4.4 - Prob. 49ECh. 4.4 - Prob. 50ECh. 4.4 - Prob. 51ECh. 4.4 - Prob. 52ECh. 4.4 - Use algebraic and/or graphical methods to solve...Ch. 4.4 - Prob. 54ECh. 4.4 - Prob. 55ECh. 4.4 - Prob. 56ECh. 4.4 - Prob. 57ECh. 4.4 - Prob. 58ECh. 4.4 - Prob. 59ECh. 4.4 - Prob. 60ECh. 4.4 - Prob. 61ECh. 4.4 - Prob. 62ECh. 4.4 - Prob. 63ECh. 4.4 - Use graphical and/or numerical methods to solve...Ch. 4.4 - 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