The bar graph shows your chances of surviving to various ages once you reach 60.Source: Na...

The bar graph shows your chances of surviving to various ages once you reach 60.

Source: NationalCenterforHealthStatistics

The functions

f(x) = −2.9x + 286 and g(x) = 0.01x2 − 4.9x + 370

model the chance, as a percent, that a 60-year-old will survive to age x. Use this information to solve Exercise.

a. Find and interpret f(70).

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b. Find and interpret g(70).

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c. Which function serves as a better model for the chance of surviving to age 70?