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Average annual premiums for employer-sponsored family health insurance policies more than doubled over 11 years. The bar graph shows the average cost of a family health insurance plan in the United States for six selected years from 2000 through 2011.
The data can be modeled by
in which f(x) and g(x) represent the average cost of a family health insurance plan x years after 2000. Use these functions to solve Exercises 71–72. Where necessary, round answers to the nearest whole dollar.
a. According to the linear model, what was the average cost of a family health insurance plan in 2008?
b. According to the exponential model, what was the average cost of a family health insurance plan in 2008?
c. Which function is a better model for the data in 2008?
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EBK ALGEBRA AND TRIGONOMETRY
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