A driver 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 miles driven for drivers of various age groups. Forexample, 25-year-old drivers are involved in 4.1 fatal crashes per 100 million miles driven.Thus, when a group of25-year-old Americans have driven a total of 100 millionmiles, approximately 4 have been in accidents in which someone died. The number of fatal vehicle crashes per 100 millionmiles, f(x), for drivers of age x can be modeled by the following quadratic function.

f(x)=0.013x21.19x+28.24

decorative image

A bar graph titled "Age of U.S. Drivers and Fatal Crashes" has a horizontal axis with ten labels and a vertical axis labeled from 0 to 18 in increments of 3. There are vertical bars, each of which is over a horizontal axis label. The heights of the bars are as follows, where the horizontal axis label is listed first and the height is listed second: 16, 17.7; 18, 9.5; 20, 6.2; 25, 4.1; 35, 2.8; 45, 2.4; 55, 3.0; 65, 3.8; 75, 8.0; 79, 16.3.

Age of U.S. Drivers and Fatal Crashes

16

18

20

25

35

45

55

65

75

79

0

3

6

9

12

15

18

age of drivers

What age groups are expected to be involved in 4 fatal crashes per 100 million milesdriven?

31 comma 61

31,61-year-olds

(Round to nearest whole number. Use a comma to separate answers asneeded.)