EBK COLLEGE ALGEBRA IN CONTEXT
EBK COLLEGE ALGEBRA IN CONTEXT
5th Edition
ISBN: 8220102019737
Author: YOCCO
Publisher: PEARSON
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Chapter 5.4, Problem 25E

Average Annual Wage The following table shows the U.S. average annual wage, in thousands of dollars, for selected years from 1980 and projected to 2050.

  1. a. Find an exponential function that models these data, with x equal to the number of years after 1980 and y equal to the average annual wage in thousands of dollars.
  2. b. Graph the model and the data on the same axes.
  3. c. What does the model predict that the average annual wage will be in 2040? Is this interpolation or extrapolation?
  4. d. When does the model predict that the average annual wage will reach $225,000?
Year Average Annual Wage ($ thousands)
1980 12.5
1990 21.0
2000 32.2
2010 41.7
2012 44.6
2014 48.6
2016 53.3
2018 58.7
2020 63.7
2025 76.8
2030 93.2
2035 113.2
2040 137.6
2045 167.1
2050 202.5

(Source: Social Security Administration)

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Chapter 5 Solutions

EBK COLLEGE ALGEBRA IN CONTEXT

Ch. 5.1 - Which of the following functions are exponential...Ch. 5.1 - Prob. 2ECh. 5.1 - a. Graph the function f(x) = ex on the window [5,...Ch. 5.1 - a. Graph the function f(x) = 5x on the window [5,...Ch. 5.1 - Graph the function y = 3x on [5, 5] by [10, 30].Ch. 5.1 - Prob. 6ECh. 5.1 - Prob. 7ECh. 5.1 - Prob. 8ECh. 5.1 - Prob. 9ECh. 5.1 - Prob. 10E
Ch. 5.1 - Prob. 11ECh. 5.1 - Prob. 12ECh. 5.1 - Prob. 13ECh. 5.1 - Prob. 14ECh. 5.1 - Prob. 15ECh. 5.1 - Prob. 16ECh. 5.1 - Prob. 17ECh. 5.1 - Prob. 18ECh. 5.1 - Prob. 19ECh. 5.1 - In Exercises 1924, use your knowledge of...Ch. 5.1 - Prob. 21ECh. 5.1 - Prob. 22ECh. 5.1 - Prob. 23ECh. 5.1 - Prob. 24ECh. 5.1 - Prob. 25ECh. 5.1 - Prob. 26ECh. 5.1 - Prob. 27ECh. 5.1 - Prob. 28ECh. 5.1 - Prob. 29ECh. 5.1 - Prob. 30ECh. 5.1 - Prob. 31ECh. 5.1 - Prob. 32ECh. 5.1 - Prob. 33ECh. 5.1 - Prob. 34ECh. 5.1 - Prob. 35ECh. 5.1 - Prob. 36ECh. 5.1 - Prob. 37ECh. 5.1 - Sales Decay At the end of an advertising campaign,...Ch. 5.1 - Investment a. Graph the function S = 80,000...Ch. 5.1 - Investment a. Graph the function S = 56,000...Ch. 5.1 - Prob. 41ECh. 5.1 - Prob. 42ECh. 5.1 - Prob. 43ECh. 5.1 - Prob. 44ECh. 5.1 - Prob. 45ECh. 5.1 - Prob. 46ECh. 5.1 - Prob. 47ECh. 5.1 - Prob. 48ECh. 5.1 - Prob. 49ECh. 5.1 - Prob. 50ECh. 5.1 - Population The population in a certain city was...Ch. 5.1 - Prob. 52ECh. 5.1 - Prob. 53ECh. 5.1 - Drugs in the Bloodstream If a drug is injected...Ch. 5.1 - Prob. 55ECh. 5.1 - Prob. 56ECh. 5.2 - In Exercises 14, write the logarithmic equations...Ch. 5.2 - In Exercises 14, write the logarithmic equations...Ch. 5.2 - y = ln(2x)Ch. 5.2 - Prob. 4ECh. 5.2 - Prob. 5ECh. 5.2 - Prob. 6ECh. 5.2 - Prob. 7ECh. 5.2 - Prob. 8ECh. 5.2 - In Exercises 9 and 10, evaluate the logarithms, if...Ch. 5.2 - In Exercises 9 and 10, evaluate the logarithms, if...Ch. 5.2 - In Exercises 1113, find the value of the...Ch. 5.2 - In Exercises 1113, find the value of the...Ch. 5.2 - Prob. 13ECh. 5.2 - Graph the functions by changing to exponential...Ch. 5.2 - Prob. 15ECh. 5.2 - Prob. 16ECh. 5.2 - Prob. 17ECh. 5.2 - Prob. 18ECh. 5.2 - Prob. 19ECh. 5.2 - Prob. 20ECh. 5.2 - Prob. 21ECh. 5.2 - Prob. 22ECh. 5.2 - Prob. 23ECh. 5.2 - Prob. 24ECh. 5.2 - Prob. 25ECh. 5.2 - Prob. 26ECh. 5.2 - Prob. 27ECh. 5.2 - Prob. 28ECh. 5.2 - Prob. 29ECh. 5.2 - Prob. 30ECh. 5.2 - Prob. 31ECh. 5.2 - Prob. 32ECh. 5.2 - In Exercises 3134, rewrite each expression as a...Ch. 5.2 - In Exercises 3134, rewrite each expression as a...Ch. 5.2 - Prob. 35ECh. 5.2 - Prob. 36ECh. 5.2 - Prob. 37ECh. 5.2 - In Exercises 3538, rewrite each expression as a...Ch. 5.2 - Prob. 39ECh. 5.2 - Prob. 40ECh. 5.2 - Prob. 41ECh. 5.2 - Prob. 42ECh. 5.2 - Prob. 43ECh. 5.2 - Prob. 44ECh. 5.2 - Prob. 45ECh. 5.2 - Obesity The percent of Americas who are obese from...Ch. 5.2 - Doubling Time If 4000 is invested in an account...Ch. 5.2 - Prob. 48ECh. 5.2 - Prob. 49ECh. 5.2 - Prob. 50ECh. 5.2 - Prob. 51ECh. 5.2 - Prob. 52ECh. 5.2 - Earthquakes If an earthquake has an intensity of...Ch. 5.2 - Earthquakes a. If an earthquake has an intensity...Ch. 5.2 - Prob. 55ECh. 5.2 - Prob. 56ECh. 5.2 - Prob. 57ECh. 5.2 - Earthquakes On January 9, 2008, an earthquake in...Ch. 5.2 - Prob. 59ECh. 5.2 - Prob. 60ECh. 5.2 - Prob. 61ECh. 5.2 - Prob. 62ECh. 5.2 - Use the following information to answer the...Ch. 5.2 - Prob. 64ECh. 5.2 - Prob. 65ECh. 5.2 - Prob. 66ECh. 5.2 - Use the following information to answer the...Ch. 5.2 - Prob. 68ECh. 5.2 - pH Levels The pH value of eggs is 7.79. Find the...Ch. 5.2 - To answer the questions in Exercises 6872, use the...Ch. 5.2 - Prob. 71ECh. 5.2 - Prob. 72ECh. 5.3 - In Exercises 110, solve the equations...Ch. 5.3 - Prob. 2ECh. 5.3 - Prob. 3ECh. 5.3 - Prob. 4ECh. 5.3 - Prob. 5ECh. 5.3 - Prob. 6ECh. 5.3 - Prob. 7ECh. 5.3 - Prob. 8ECh. 5.3 - Prob. 9ECh. 5.3 - Prob. 10ECh. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Prob. 13ECh. 5.3 - Prob. 14ECh. 5.3 - Prob. 15ECh. 5.3 - Prob. 16ECh. 5.3 - Prob. 17ECh. 5.3 - Prob. 18ECh. 5.3 - Prob. 19ECh. 5.3 - Prob. 20ECh. 5.3 - Prob. 21ECh. 5.3 - Prob. 22ECh. 5.3 - Prob. 23ECh. 5.3 - Prob. 24ECh. 5.3 - Prob. 25ECh. 5.3 - Prob. 26ECh. 5.3 - Prob. 27ECh. 5.3 - Prob. 28ECh. 5.3 - Prob. 29ECh. 5.3 - Prob. 30ECh. 5.3 - Prob. 31ECh. 5.3 - Prob. 32ECh. 5.3 - Prob. 33ECh. 5.3 - Prob. 34ECh. 5.3 - Prob. 35ECh. 5.3 - Prob. 36ECh. 5.3 - Prob. 37ECh. 5.3 - Prob. 38ECh. 5.3 - Prob. 39ECh. 5.3 - Prob. 40ECh. 5.3 - Prob. 41ECh. 5.3 - Prob. 42ECh. 5.3 - Sales Decay After a television advertising...Ch. 5.3 - Prob. 44ECh. 5.3 - Prob. 45ECh. 5.3 - Prob. 46ECh. 5.3 - Super Bowl Ads A minute ad during Super Bowl VII...Ch. 5.3 - Prob. 48ECh. 5.3 - Purchasing Power The purchasing power (real value...Ch. 5.3 - Prob. 50ECh. 5.3 - Prob. 51ECh. 5.3 - Real Estate Inflation During a 10-year period of...Ch. 5.3 - Prob. 53ECh. 5.3 - Prob. 54ECh. 5.3 - Drugs in the Bloodstream The concentration of a...Ch. 5.3 - Prob. 56ECh. 5.3 - Prob. 57ECh. 5.3 - Prob. 58ECh. 5.3 - Prob. 59ECh. 5.3 - Prob. 60ECh. 5.3 - Prob. 61ECh. 5.3 - Prob. 62ECh. 5.3 - Prob. 63ECh. 5.3 - Prob. 64ECh. 5.3 - Prob. 65ECh. 5.3 - Prob. 66ECh. 5.3 - Prob. 67ECh. 5.3 - Prob. 68ECh. 5.3 - Prob. 69ECh. 5.3 - Prob. 70ECh. 5.3 - Prob. 71ECh. 5.3 - Prob. 72ECh. 5.3 - Prob. 73ECh. 5.3 - Prob. 74ECh. 5.3 - Prob. 75ECh. 5.3 - Prob. 76ECh. 5.3 - Prob. 77ECh. 5.3 - Prob. 78ECh. 5.3 - Prob. 79ECh. 5.3 - Drugs in the Bloodstream The concentration of a...Ch. 5.3 - Carbon-14 Dating An exponential decay function can...Ch. 5.3 - Sales Decay After a television advertising...Ch. 5.3 - Prob. 83ECh. 5.4 - Find the exponential function that models the data...Ch. 5.4 - Prob. 2ECh. 5.4 - Prob. 3ECh. 5.4 - The following table has input x and output h(x)....Ch. 5.4 - Prob. 5ECh. 5.4 - Find the exponential function that is the best fit...Ch. 5.4 - Prob. 7ECh. 5.4 - Prob. 8ECh. 5.4 - Compare the first differences and the percent...Ch. 5.4 - Prob. 10ECh. 5.4 - Prob. 11ECh. 5.4 - Prob. 12ECh. 5.4 - Prob. 13ECh. 5.4 - Prob. 14ECh. 5.4 - a. Make a scatter plot of the data in the table...Ch. 5.4 - Prob. 16ECh. 5.4 - Prob. 17ECh. 5.4 - Use the exponential form y = a (1 + r)x to model...Ch. 5.4 - Prob. 19ECh. 5.4 - Prob. 20ECh. 5.4 - Prob. 21ECh. 5.4 - Prob. 22ECh. 5.4 - Chinas Shale Natural Gas The estimated annual...Ch. 5.4 - Prob. 24ECh. 5.4 - Average Annual Wage The following table shows the...Ch. 5.4 - Alzheimers Disease Partially because people in the...Ch. 5.4 - Prob. 27ECh. 5.4 - Prob. 28ECh. 5.4 - Prob. 29ECh. 5.4 - Prob. 30ECh. 5.4 - Prob. 31ECh. 5.4 - Prob. 32ECh. 5.4 - Prob. 33ECh. 5.4 - Sexually Active Boys The percents of boys age x or...Ch. 5.4 - Fuel Economy The lifetime gasoline use of...Ch. 5.4 - National Debt The table gives the U.S. national...Ch. 5.5 - Evaluate the expressions in Exercises 110. Write...Ch. 5.5 - Prob. 2ECh. 5.5 - Prob. 3ECh. 5.5 - Prob. 4ECh. 5.5 - Prob. 5ECh. 5.5 - Prob. 6ECh. 5.5 - Prob. 7ECh. 5.5 - Prob. 8ECh. 5.5 - Prob. 9ECh. 5.5 - Prob. 10ECh. 5.5 - Find g(2.5), g(3), and g(3.5) if...Ch. 5.5 - Prob. 12ECh. 5.5 - Prob. 13ECh. 5.5 - Prob. 14ECh. 5.5 - Prob. 15ECh. 5.5 - Prob. 16ECh. 5.5 - Prob. 17ECh. 5.5 - Prob. 18ECh. 5.5 - Future Value If 10,000 is invested at 12%...Ch. 5.5 - Prob. 20ECh. 5.5 - Future Value An amount of 10,000 is invested at...Ch. 5.5 - Future Value A total of 8800 is invested at 6%...Ch. 5.5 - Compound Interest If 10,000 is invested at 12%...Ch. 5.5 - Prob. 24ECh. 5.5 - Continuous Compounding Suppose 10,000 is invested...Ch. 5.5 - Prob. 26ECh. 5.5 - Continuous versus Annual Compounding a. If 10,000...Ch. 5.5 - Prob. 28ECh. 5.5 - Doubling Time Use a spreadsheet, a table, or a...Ch. 5.5 - Prob. 30ECh. 5.5 - Prob. 31ECh. 5.5 - Prob. 32ECh. 5.5 - Prob. 33ECh. 5.5 - Prob. 34ECh. 5.5 - Doubling Time If money is invested at 10%...Ch. 5.5 - Doubling Time If money is invested at 11.6%...Ch. 5.5 - Prob. 37ECh. 5.5 - Prob. 38ECh. 5.5 - Prob. 39ECh. 5.5 - Prob. 40ECh. 5.5 - Prob. 41ECh. 5.5 - Prob. 42ECh. 5.5 - Prob. 43ECh. 5.5 - Retirement Hennie and Bob inherit 100,000 and plan...Ch. 5.5 - Prob. 45ECh. 5.5 - Prob. 46ECh. 5.5 - Prob. 47ECh. 5.5 - Prob. 48ECh. 5.5 - Prob. 49ECh. 5.5 - Prob. 50ECh. 5.5 - Prob. 51ECh. 5.5 - Prob. 52ECh. 5.6 - Give answers to two decimal places. 1. Solve S =...Ch. 5.6 - Prob. 2ECh. 5.6 - Prob. 3ECh. 5.6 - Prob. 4ECh. 5.6 - Prob. 5ECh. 5.6 - Prob. 6ECh. 5.6 - IRA Anne Wright decides to invest 4000 in an IRA...Ch. 5.6 - Prob. 8ECh. 5.6 - Prob. 9ECh. 5.6 - Prob. 10ECh. 5.6 - Prob. 11ECh. 5.6 - Prob. 12ECh. 5.6 - Prob. 13ECh. 5.6 - Prob. 14ECh. 5.6 - Annuities Find the present value of an annuity...Ch. 5.6 - Prob. 16ECh. 5.6 - Prob. 17ECh. 5.6 - College Tuition A couple wants to establish a fund...Ch. 5.6 - Insurance Payment A man is disabled in an accident...Ch. 5.6 - Auto Leasing A woman wants to lease rather than...Ch. 5.6 - Business Sale A man can sell his Thrifty...Ch. 5.6 - Prob. 22ECh. 5.6 - Home Mortgage A couple wants to buy a house and...Ch. 5.6 - Prob. 24ECh. 5.6 - Loan Repayment A loan of 10,000 is to be amortized...Ch. 5.6 - Prob. 26ECh. 5.6 - Home Mortgage A couple who wants to purchase a...Ch. 5.6 - Prob. 28ECh. 5.7 - Give approximate answers to two decimal places. 1....Ch. 5.7 - Prob. 2ECh. 5.7 - Prob. 3ECh. 5.7 - Prob. 4ECh. 5.7 - Give approximate answers to two decimal places. 5....Ch. 5.7 - Prob. 6ECh. 5.7 - Give approximate answers to two decimal places. 7....Ch. 5.7 - Prob. 8ECh. 5.7 - Spread of a Disease The spread of a highly...Ch. 5.7 - Prob. 10ECh. 5.7 - Prob. 11ECh. 5.7 - Prob. 12ECh. 5.7 - Spread of a Rumor The number of people in a small...Ch. 5.7 - Organizational Growth A new community college...Ch. 5.7 - Prob. 22ECh. 5.7 - Prob. 23ECh. 5.7 - Company Growth Because of a new research grant,...Ch. 5.7 - Prob. 25ECh. 5.7 - Prob. 26ECh. 5.7 - Prob. 27ECh. 5.7 - Prob. 28ECh. 5.7 - Prob. 29ECh. 5.7 - Prob. 30ECh. 5 - In Exercises 1 and 2, use the properties of...Ch. 5 - a. y5 y b. w10w4 c. (6bx)3 d. (5z2)3 e. 32 33 f....Ch. 5 - In Exercises 318, use the properties of exponents...Ch. 5 - Prob. 4TECh. 5 - Prob. 5TECh. 5 - Prob. 6TECh. 5 - Prob. 7TECh. 5 - Prob. 8TECh. 5 - Prob. 9TECh. 5 - In Exercises 318, use the properties of exponents...Ch. 5 - Prob. 11TECh. 5 - Prob. 12TECh. 5 - Prob. 13TECh. 5 - Prob. 14TECh. 5 - Prob. 15TECh. 5 - Prob. 16TECh. 5 - Prob. 17TECh. 5 - Prob. 18TECh. 5 - In Exercises 1922, write the numbers in scientific...Ch. 5 - Prob. 20TECh. 5 - Prob. 21TECh. 5 - In Exercises 1922, write the numbers in scientific...Ch. 5 - Prob. 23TECh. 5 - Prob. 24TECh. 5 - Prob. 25TECh. 5 - Prob. 26TECh. 5 - Prob. 27TECh. 5 - Prob. 28TECh. 5 - In Exercises 2938, use the properties of exponents...Ch. 5 - Prob. 30TECh. 5 - Prob. 31TECh. 5 - Prob. 32TECh. 5 - Prob. 33TECh. 5 - Prob. 34TECh. 5 - Prob. 35TECh. 5 - Prob. 36TECh. 5 - Prob. 37TECh. 5 - Prob. 38TECh. 5 - Prob. 1RECh. 5 - Prob. 2RECh. 5 - Prob. 3RECh. 5 - Prob. 4RECh. 5 - Prob. 5RECh. 5 - Prob. 6RECh. 5 - Prob. 7RECh. 5 - Prob. 8RECh. 5 - Prob. 9RECh. 5 - Prob. 10RECh. 5 - In Exercises 1012, write the logarithmic equations...Ch. 5 - In Exercises 1012, write the logarithmic equations...Ch. 5 - Write the inverse of y = 4x in logarithmic form.Ch. 5 - In Exercises 1416, evaluate the logarithms, if...Ch. 5 - In Exercises 1416, evaluate the logarithms, if...Ch. 5 - Prob. 16RECh. 5 - Prob. 17RECh. 5 - Prob. 18RECh. 5 - In Exercises 1719, find the value of the...Ch. 5 - In Exercises 20 and 21, use a change of base...Ch. 5 - Prob. 21RECh. 5 - Prob. 22RECh. 5 - Prob. 23RECh. 5 - Prob. 24RECh. 5 - Prob. 25RECh. 5 - In Exercises 2427, solve the exponential...Ch. 5 - In Exercises 2427, solve the exponential...Ch. 5 - Prob. 28RECh. 5 - Rewrite 6 log4 x 2 log4 y as a single logarithm.Ch. 5 - Determine whether a linear or an exponential...Ch. 5 - Evaluate P(1+rk)kn for P = 1000, r = 8%, k = 12, n...Ch. 5 - Prob. 32RECh. 5 - Prob. 33RECh. 5 - a. Graph y = 500 (0.10.2x) for x = 0 to x = 10. b....Ch. 5 - Prob. 35RECh. 5 - Prob. 36RECh. 5 - Sales Decay At the end of an advertising campaign,...Ch. 5 - Earthquakes a. If an earthquake has an intensity...Ch. 5 - Earthquakes On January 23, 2001, an earthquake...Ch. 5 - Prob. 40RECh. 5 - Prob. 41RECh. 5 - Prob. 42RECh. 5 - Hearing High-pitched tones that young people can...Ch. 5 - Mobile Home Sales A company that buys and sells...Ch. 5 - Sales Decay At the end of an advertising campaign,...Ch. 5 - Prob. 46RECh. 5 - Prob. 47RECh. 5 - Prob. 48RECh. 5 - Investments If 3300 is invested for x years at...Ch. 5 - Prob. 50RECh. 5 - Prob. 51RECh. 5 - Energy Use Energy use per dollar of GDP is indexed...Ch. 5 - Prob. 53RECh. 5 - Prob. 54RECh. 5 - Endangered Species The following table gives the...Ch. 5 - Prob. 58RECh. 5 - Annuities At the end of each quarter, 1000 is...Ch. 5 - Prob. 60RECh. 5 - Present Value Find the present value of an annuity...Ch. 5 - Prob. 62RECh. 5 - Prob. 63RECh. 5 - Prob. 64RECh. 5 - Prob. 65RECh. 5 - Prob. 66RECh. 5 - Organizational Growth The president of a new...Ch. 5 - Prob. 68RECh. 5 - Prob. 69RECh. 5 - Interest Rate Suppose that 30,000 is invested at...Ch. 5 - Prob. 71RE
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