Concept explainers
A driver’s age has something to do with his or her chance of getting into a fatal car crash. The bar graph shows the number of fatal vehicle crashes per 100 million mules driven for drivers of various age groups, For example. 25-year-old drivers are involved in 4.1 fatal crashes per 100 million miles driven. Thus, when a group of 25-year-old Americans have driven a total of 100 million miles. approximately 4 have been in accidents in which someone died.
The number of fatal vehicle crashes per 100 miles. N, for drivers of age x can be modeled by the formula
N – 0.013x2 – 1.19x + 28.24.
Use the formula to solve Exercises 135–136.
What age groups are expected to be involved in 3 fatal crashes per 100 million miles driven? How well does the formula model the trend in the actual data shown in the bar graph?

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Chapter 1 Solutions
EP COLLEGE ALGEBRA-MYMATHLAB ACCESS
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