Question

A ball is thrown upward from the top of a building. The function below shows the height of the ball above the ground, f(t), in feet, at different times (t) in seconds:

f(t) = -16t^2 + 48t + 100

The average rate of change of f(x) from x = 3 seconds to x = 5 seconds is _____feet per second.

Answer 1

@ranga

Answer 2

@wio @ajprincess

Answer 3

First you need f(3) and f(5)
That is just place 3 and 5 into the below function. (replace t with 3 first than with 5)
f(t) = -16t^2 + 48t + 100

Once you are done the average rate of change is:
\[\frac{ f(5)-f(3) }{ 5-3 }\]

Answer 4

so is it 1 @Andras

Answer 5

yes