Question

The function d(t)=-2t^2+9t+18 most closely represents the height(h) of the golf ball in feet after t seconds. How long is the golf ball in the air?

Answer 1

Explanation:

d(t)=-2t^2+9t+18

calculate the derivate : f'(t) = - 4t+9

f'(t) = 0 : - 4t+9= 0 so t = 9/4

the maximum value is f(9/4) = ....... continue