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 5, Problem 32TE
To determine
To simplify: The expression
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Exercises 38–40 will help you prepare for the material covered in
the first section of the next chapter.
In Exercises 38-39, simplify each algebraic expression.
38. (-9x³ + 7x? - 5x + 3) + (13x + 2r? – &x – 6)
39. (7x3 – 8x? + 9x – 6) – (2x – 6x? – 3x + 9)
40. The figures show the graphs of two functions.
y
y
201
10-
....
-20-
flx) = x³
glx) = -0.3x + 4x + 2
In Exercises 9–12, the given expressions are designed to yield results expressed in a form of scientific notation. For example, the calculator-displayed result of 1.23E5 can be expressed as 123,000, and the result of 1.23E-4 can be expressed as 0.000123. Perform the indicated operation and express the result as an ordinary number that is not in scientific notation.
0.48
For Exercises 115–120, factor the expressions over the set of complex numbers. For assistance, consider these examples.
• In Section R.3 we saw that some expressions factor over the set of integers. For example: x - 4 = (x + 2)(x – 2).
• Some expressions factor over the set of irrational numbers. For example: - 5 = (x + V5)(x – V5).
To factor an expression such as x + 4, we need to factor over the set of complex numbers. For example, verify that
x + 4 = (x + 2i)(x – 2i).
115. а. х
- 9
116. а. х?
- 100
117. а. х
- 64
b. x + 9
b. + 100
b. x + 64
118. а. х — 25
119. а. х— 3
120. а. х — 11
b. x + 25
b. x + 3
b. x + 11
Chapter 5 Solutions
College Algebra in Context with Applications for the Managerial, Life, and Social Sciences (5th Edition)
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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- Make Sense? In Exercises 135–138, determine whether each statement makes sense or does not make sense, and explain your reasoning. 135. I use the same ideas to multiply (V2 + 5) (V2 + 4) that I did to find the binomial product (x + 5)(x + 4). 136. I used a special-product formula and simplified as follows: (V2 + V5)? = 2 + 5 = 7. 137. In some cases when I multiply a square root expression and its conjugate, the simplified product contains a radical. 138. I use the fact that 1 is the multiplicative identity to both rationalize denominators and rewrite rational expressions with a common denominator.arrow_forwardWrite 1 · 2 · 3 · 4 · 5 · 6 in factorial notation.arrow_forwardWhich property justifies (a+b)+0=(a+b)arrow_forward
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