Mathematics with Applications, Books a la Carte, and MyLab Math with Pearson eText - Title-Specific Access Card Package (12th Edition)
Mathematics with Applications, Books a la Carte, and MyLab Math with Pearson eText - Title-Specific Access Card Package (12th Edition)
12th Edition
ISBN: 9780134862651
Author: Lial
Publisher: PEARSON
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Concept explainers

Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as p…
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Chapter 4.2, Problem 18E

Seat-Belt Use Data form the National Highway Traffic Safety Administration indicate that, in year t, the approximate percentage of people in the United States who wear seat belts driving is given by

g ( t ) = 88.2 1 + .243 e − .18 t ,

where t = 0 corresponds to the year 2000.

What percentage of drivers used seat belts in 2014?

According to this model, does seat-belt use ever reach 100%?

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Chapter 4 Solutions

Mathematics with Applications, Books a la Carte, and MyLab Math with Pearson eText - Title-Specific Access Card Package (12th Edition)

Ch. 4.1 - Checkpoint 1 (a) Fill in this table: x g(x) =...Ch. 4.1 - Prob. 2CPCh. 4.1 - Checkpoint 3 Use a graphing calculator to graph ...Ch. 4.1 - Prob. 4CPCh. 4.1 - Checkpoint 5 Graph Ch. 4.1 - Prob. 6CPCh. 4.1 - Checkpoint 7 Per-person wine consumption (in...Ch. 4.1 - Classify each function as linear, quadratic, or...Ch. 4.1 - Prob. 2ECh. 4.1 - Prob. 3E
Ch. 4.1 - Prob. 4ECh. 4.1 - Classify each function as linear, quadratic, or...Ch. 4.1 - Prob. 6ECh. 4.1 - Without graphing, (a) describe the shape of the...Ch. 4.1 - Prob. 8ECh. 4.1 - Prob. 9ECh. 4.1 - Prob. 10ECh. 4.1 - Without graphing, (a) describe the shape of the...Ch. 4.1 - Prob. 12ECh. 4.1 - Graph each function. (See Examples 1–3.) 13. Ch. 4.1 - Prob. 14ECh. 4.1 - Graph each function. (See Examples 1–3.) 15. Ch. 4.1 - Prob. 16ECh. 4.1 - Graph each function. (See Examples 1–3.) 17. Ch. 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 - In Exercises 27 and 28, the graph of an...Ch. 4.1 - Prob. 28ECh. 4.1 - Prob. 29ECh. 4.1 - 30. Give a rule of the form to define the...Ch. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - Prob. 33ECh. 4.1 - Prob. 34ECh. 4.1 - Prob. 35ECh. 4.1 - 36. Finance If money loses value at the rate of 3%...Ch. 4.1 - Work these problems. (See Example 5.) 37. Finance...Ch. 4.1 - 38. Natural Science Biologists have found that the...Ch. 4.1 - Work the following exercises. 39. Prudential...Ch. 4.1 - 40. Business The monthly payment on a car loan at...Ch. 4.1 - 41. Natural Science The amount of plutonium...Ch. 4.1 - Business The scrap value of a machine is the value...Ch. 4.1 - Business The scrap value of a machine is the value...Ch. 4.1 - Business The scrap value of a machine is the value...Ch. 4.1 - Work the following problems. (See Examples 5 and...Ch. 4.1 - Work the following problems. (See Examples 5 and...Ch. 4.1 - GDP Use the following information to answer...Ch. 4.1 - GDP Use the following information to answer...Ch. 4.1 - GDP Use the following information to answer...Ch. 4.1 - GDP Use the following information to answer...Ch. 4.1 - Asset Management The amount of money (in trillions...Ch. 4.1 - Imports from Vietnam The value of U.S. imports...Ch. 4.1 - 53. Subprime Mortgages The amount of money (in...Ch. 4.1 - Subprime Mortgages The amount of money (in...Ch. 4.2 - Checkpoint 1 Suppose the number of bacteria in a...Ch. 4.2 - Checkpoint 2 Suppose an investment grows...Ch. 4.2 - Prob. 3CPCh. 4.2 - Prob. 4CPCh. 4.2 - Prob. 1ECh. 4.2 - 2. Finance Suppose you owe $1500 on your credit...Ch. 4.2 - Natural Gas Production Theannual amount of energy...Ch. 4.2 - Oil Production The annual amount of U.S. crude-oil...Ch. 4.2 - In each of the following problems, find an...Ch. 4.2 - 6. Social Science The U.S. Census Bureau predicts...Ch. 4.2 - In each of the following problems, find an...Ch. 4.2 - In each of the following problems, find an...Ch. 4.2 - In the following exercises, find the exponential...Ch. 4.2 - Prob. 10ECh. 4.2 - In the following exercises, find the exponential...Ch. 4.2 - In the following exercises, find the exponential...Ch. 4.2 - 13. Business Assembly-line operations tend to have...Ch. 4.2 - 14. Social Science The number of words per minute...Ch. 4.2 - Natural Science Newton's law of cooling says that...Ch. 4.2 - Natural Science Newton's law of cooling says that...Ch. 4.2 - Internet Use in China The percentage of Chinese...Ch. 4.2 - Seat-Belt Use Data form the National Highway...Ch. 4.2 - Food Assistance The amount of money the U.S....Ch. 4.2 - Prob. 20ECh. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.3 - Checkpoint 1 Find each common logarithm. (a) log...Ch. 4.3 - Prob. 2CPCh. 4.3 - Prob. 3CPCh. 4.3 - Prob. 4CPCh. 4.3 - Prob. 5CPCh. 4.3 - Prob. 6CPCh. 4.3 - Prob. 8CPCh. 4.3 - Prob. 1ECh. 4.3 - Complete each statement in Exercises 1–4. 2. The...Ch. 4.3 - Complete each statement in Exercises 1–4. 3. What...Ch. 4.3 - Complete each statement in Exercises...Ch. 4.3 - Translate each logarithmic statement into an...Ch. 4.3 - Translate each logarithmic statement into an...Ch. 4.3 - Translate each logarithmic statement into an...Ch. 4.3 - Translate each logarithmic statement into an...Ch. 4.3 - Translate each exponential statement. into an...Ch. 4.3 - Translate each exponential statement into an...Ch. 4.3 - Translate each exponential statement into an...Ch. 4.3 - Translate each exponential statement into an...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Without using a calculator, evaluate each of the...Ch. 4.3 - Use a calculator to evaluate each logarithm to...Ch. 4.3 - Use a calculator to evaluate each logarithm to...Ch. 4.3 - Use a calculator to evaluate each logarithm to...Ch. 4.3 - Use a calculator to evaluate each logarithm to...Ch. 4.3 - 29. Why does 1 always equal 0 for any valid base...Ch. 4.3 - Prob. 30ECh. 4.3 - Write each expression as the logarithm of a single...Ch. 4.3 - Prob. 32ECh. 4.3 - Prob. 33ECh. 4.3 - Write each expression as the logarithm of a single...Ch. 4.3 - Write each expression as the logarithm of a single...Ch. 4.3 - Write each expression as the logarithm of a single...Ch. 4.3 - Write each expression as the logarithm of a single...Ch. 4.3 - Write each expression as a sum and/or a difference...Ch. 4.3 - Write each expression as a sum and/or a difference...Ch. 4.3 - Write each expression as a sum and/or a difference...Ch. 4.3 - Write each expression as a sum and/or a difference...Ch. 4.3 - Write each expression as a sum and/or a difference...Ch. 4.3 - Express each expression in terms of u and v, where...Ch. 4.3 - Express each expression in terms of u and v, where...Ch. 4.3 - Express each expression in terms of u and v, where...Ch. 4.3 - Express each expression in terms of u and v, where...Ch. 4.3 - Evaluate each expression. (See Example 9.) Example...Ch. 4.3 - Evaluate each expression. (See Example 9.) Example...Ch. 4.3 - Evaluate each expression. (See Example 9.) Example...Ch. 4.3 - Prob. 50ECh. 4.3 - Prob. 51ECh. 4.3 - Prob. 52ECh. 4.3 - Prob. 53ECh. 4.3 - Prob. 54ECh. 4.3 - Prob. 55ECh. 4.3 - Prob. 56ECh. 4.3 - Prob. 57ECh. 4.3 - Prob. 58ECh. 4.3 - Prob. 59ECh. 4.3 - Prob. 60ECh. 4.3 - Prob. 61ECh. 4.3 - 62. Health Two people with flu visited a college...Ch. 4.3 - Health Insurance Costs The average annual cost (in...Ch. 4.3 - Prob. 64ECh. 4.3 - Dairy Expenditures The average annual expenditures...Ch. 4.3 - Credit Union Assets The total assets (in billions...Ch. 4.3 - Border Patrol Budget The amount (in billions) that...Ch. 4.3 - Opioid Deaths The number of deaths from opioids in...Ch. 4.3 - 69. Apple iPhone Sales The worldwide number (in...Ch. 4.3 - Prob. 70ECh. 4.4 - Checkpoint 1 Solve each equation. (a) (b) Ch. 4.4 - Prob. 2CPCh. 4.4 - Prob. 3CPCh. 4.4 - Prob. 4CPCh. 4.4 - Prob. 5CPCh. 4.4 - Checkpoint 6 Solve each equation. Round solutions...Ch. 4.4 - Prob. 7CPCh. 4.4 - Prob. 8CPCh. 4.4 - Prob. 9CPCh. 4.4 - Prob. 10CPCh. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Prob. 2ECh. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Solve each logarithmic equation. (See Example...Ch. 4.4 - Prob. 16ECh. 4.4 - Prob. 17ECh. 4.4 - Prob. 18ECh. 4.4 - Prob. 19ECh. 4.4 - Prob. 20ECh. 4.4 - 21. Suppose you overhear the following statement:...Ch. 4.4 - Prob. 22ECh. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Solve these exponential equations without using...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 4.4 - Use logarithms to solve these exponential...Ch. 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 - Solve these equations. (See Examples 1–6.) 53. Ch. 4.4 - Prob. 54ECh. 4.4 - Prob. 55ECh. 4.4 - Prob. 56ECh. 4.4 - Prob. 57ECh. 4.4 - Prob. 58ECh. 4.4 - Solve these equations. (See Examples 1−6.) 59. Ch. 4.4 - Prob. 60ECh. 4.4 - Prob. 61ECh. 4.4 - Prob. 62ECh. 4.4 - Work these problems. (See Examples 6, 7, and...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and 8.)...Ch. 4.4 - Work these problems. (See Examples 6, 7, and...Ch. 4.4 - Work these exercises. (See Example 8.) Example...Ch. 4.4 - Prob. 76ECh. 4.4 - Prob. 77ECh. 4.4 - Prob. 78ECh. 4.4 - Prob. 79ECh. 4.4 - Prob. 80ECh. 4.4 - Prob. 81ECh. 4.4 - Prob. 82ECh. 4 - Match each equation with the letter of the graph...Ch. 4 - Prob. 2RECh. 4 - Prob. 3RECh. 4 - Prob. 4RECh. 4 - Prob. 5RECh. 4 - Prob. 6RECh. 4 - Consider the exponential function y = f(x) = ax...Ch. 4 - Prob. 8RECh. 4 - Prob. 9RECh. 4 - Prob. 10RECh. 4 - Prob. 11RECh. 4 - Prob. 12RECh. 4 - Prob. 13RECh. 4 - Prob. 14RECh. 4 - Prob. 15RECh. 4 - Prob. 16RECh. 4 - Prob. 17RECh. 4 - Prob. 18RECh. 4 - Prob. 19RECh. 4 - Prob. 20RECh. 4 - Prob. 21RECh. 4 - Prob. 22RECh. 4 - Prob. 23RECh. 4 - Prob. 24RECh. 4 - Prob. 25RECh. 4 - Evaluate these expressions without using a...Ch. 4 - Prob. 27RECh. 4 - Prob. 28RECh. 4 - Prob. 29RECh. 4 - Prob. 30RECh. 4 - Prob. 31RECh. 4 - Prob. 32RECh. 4 - Prob. 33RECh. 4 - Prob. 34RECh. 4 - Prob. 35RECh. 4 - Prob. 36RECh. 4 - Prob. 37RECh. 4 - Prob. 38RECh. 4 - Prob. 39RECh. 4 - Prob. 40RECh. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - 48. Solve each equation. Round to the nearest...Ch. 4 - Prob. 49RECh. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Solve each equation. Round to the nearest...Ch. 4 - Prob. 53RECh. 4 - Prob. 54RECh. 4 - Prob. 55RECh. 4 - Prob. 56RECh. 4 - Prob. 57RECh. 4 - Prob. 58RECh. 4 - Prob. 59RECh. 4 - Prob. 60RECh. 4 - Prob. 61RECh. 4 - Prob. 62RECh. 4 - Prob. 63RECh. 4 - Prob. 64RECh. 4 - Prob. 65RECh. 4 - Prob. 66RECh. 4 - Prob. 67RECh. 4 - Prob. 68RECh. 4 - For Exercises 1–6, use Equation (1) that provides...Ch. 4 - Prob. 2CECh. 4 - For Exercises 16, use Equation (1) that provides a...Ch. 4 - For Exercises 1–6, use Equation (1) that provides...Ch. 4 - For Exercises 1–6, use Equation (1) that provides...Ch. 4 - For Exercises 1–6, use Equation (1) that provides...Ch. 4 - For Exercises 710, use the model in Equation (2)...Ch. 4 - For Exercises 7–10, use the model in Equation (2)...Ch. 4 - For Exercises 7–10, use the model in Equation (2)...Ch. 4 - For Exercises 7–10, use the model in Equation (2)...Ch. 4 - For Exercises 1114, use the model in Equation (3)...Ch. 4 - Prob. 12CECh. 4 - Prob. 13CECh. 4 - For Exercises 11–14, use the model in Equation (3)...Ch. 4 - Prob. 1EPCh. 4 - Prob. 2EPCh. 4 - Prob. 3EP
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