Concept explainers
(a)
To calculate:
Linear models for the health care expenditure
The table shows the health care expenditures
Year, |
4 | 5 | 6 | 7 | 8 | 9 |
1773 | 1890 | 2017 | 2135 | 2234 | 2330 | |
293 | 296 | 299 | 302 | 305 | 307 |
(b)
To graph:
Use graphing utility to graph each model found in part (a).
The table shows the health care expenditures
Year, |
4 | 5 | 6 | 7 | 8 | 9 |
1773 | 1890 | 2017 | 2135 | 2234 | 2330 | |
293 | 296 | 299 | 302 | 305 | 307 |
(c)
To calculate:
The table shows the health care expenditures
Year, |
4 | 5 | 6 | 7 | 8 | 9 |
1773 | 1890 | 2017 | 2135 | 2234 | 2330 | |
293 | 296 | 299 | 302 | 305 | 307 |
Find
(d)
To calculate:
Find and interpret
The table shows the health care expenditures
Year, |
4 | 5 | 6 | 7 | 8 | 9 |
1773 | 1890 | 2017 | 2135 | 2234 | 2330 | |
293 | 296 | 299 | 302 | 305 | 307 |
Trending nowThis is a popular solution!
Chapter 3 Solutions
Calculus: Early Transcendental Functions (MindTap Course List)
- Biology The metabolic rate of an ectothermic organism increases with increasing temperature within a certain range. Experimental data for the oxygen consumption C (in microliters per gram per hour) of a beetle at certain temperatures can be approximated by the model C=0.45x21.65x+50.75,10x25 where x is the air temperature in degrees Celsius. a The oxygen consumption is 150 microliters per gram per hour. What is the air temperature ? b When the air temperature increases from 10C to 20C, the oxygen consumption increases by approximately what factor ?arrow_forwardGraphing Discrete Data Plot the data from the table in Exercise S-2. S-2. Testing Data for Linearity Test the following data to see whether they are linear. x 2 4 6 8 y 12 17 21 25arrow_forwardPopulation Statistics The table shows the life expectancies of a child (at birth) in the United States for selected years from 1940 through 2010. A model for the life expectancy during this period is y=63.6+0.97t1+0.01t,0r70 Where y represents the life expectancy and t is the time in years, with t=0 corresponding to 1940. (a) Use a graphing utility to graph the data from the table and the model in the same viewing window. How well does the model fit the data? Explain (b) Determine the life expectancy in 1990 both graphically and algebraically. (c) Use the graph to determine the year when life expectancy was approximately 70.1. Verify your answer algebraically. (d) Identify the y-intercept of the graph of the model. What does it represent in the context of the problem? (e) Do you think this model can be used to predict the life expectancy of a child 50 years from now? Explainarrow_forward
- Population The population P (in thousands) of Tallahassee, Florida, from 2000 through 2014 can be modeled byp=150.9ekt, where t represents the year, with t=0 corresponding to 2000. In 2005, the population of Tallahassee was about 163,075. (a) Find the value of k. Is the population increasing or decreasing? Explain. (b) Use the model to predict the populations of Tallahassee in 2020 and 2025. Are the results reasonable? Explain. (c) According to the model, during what year will the population reach 200,000?arrow_forwardTotal Cost The background for this exercise can be found in Exercises 13 and 14 in Section 3.2. The following table gives the total cost C, in dollars, for a widget manufacturer as a function of the number N of widgets produced during a month. Number N Total cost C 200 7900 250 9650 300 11, 400 350 13, 150 a. What are the fixed costs and variable cost for this manufacturer? b. The manufacturer wants to reduce the fixed costs so that the total cost at a monthly production level of 350 will be 12, 975. What will the new fixed costs be? c. Instead of reducing the fixed costs as in part b, the manufacturer wants to reduce the variable cost so that the total cost at a monthly production level of 350 will be 12, 975. What will the new variable cost be?arrow_forwardPopulation Statistics The table shows the life expectancies of a child (at birth) in the United States for selected years from 1940 through 2010. A model for the life expectancy during this period is y=63.6+0.97t1+0.01t,0t70 Where y represents the life expectancy and t is the time in years, with t = 0 corresponding to 1940. (a) Use a graphing utility to graph the data from the table and the model in the same viewing window. How well does the model fit the data? Explain. (b) Determine the life expectancy in 1990 both graphically and algebraically. (c) Use the graph to determine the year when life expectancy was approximately 70.1. verify your answer algebraically. (d) Find the y-intercept of the graph of the model. What does it represent in the context of the problem? (e) Do you think this model can be used to predict the life expectancy of a child 50 years from now?arrow_forward
- Population The population P (in millions) of Italy from 2003 through 2015 can be approximated by the model P=57.59e0.0051t, where t represents the year, with t=3 corresponding to 2003. (Source: U.S. Census Bureau) (a) According to the model, is the population of Italy increasing or decreasing? Explain. (b) Find the populations of Italy in 2003 and 2015. (c) Use the model to predict the populations of Italy in 2020 and 2025.arrow_forwardDraw a scatter plot for the data in Table 2. Then determine whether the data appears to belinearly related.arrow_forwardFinding mass transit fares The Municipal Transit Authority serves 150,000 commuters daily when the fare is 1.80. Market research has determined that every penny decrease in the fare will result in 1000 new riders. What fare will maximize revenue?arrow_forward
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
- Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning