Question

I have been stuck on this question for a while and would appreciate help.

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) = -16t2 + 34t + 80

The average rate of change of f(x) from x = 5 to x = 7 is _____.

Answer 1

Here is the graph

Answer 2

are you still here @Drewgarste

Answer 3

Yes

Answer 4

Is this differential calculus?

Answer 5

Algebra 1

Answer 6

Ok first of all did you mean the average rate of change of f(t) from t = 5 to t = 7?

Answer 7

Yes

Answer 8

Ok how do you find the slope between two points?

Answer 9

I set it up as f(7) - f(5)/7 - 5

Answer 10

That's correct just plug in f(7) and f(5), simplify, and u'll get ur answer

Answer 11

Correct me if i'm wrong, one second.
@master50777

Answer 12

I got

-446 - 150/2 = -521

That's obviously wrong I believe

I don't understand what I'm doing wrong.
@master50777

Answer 13

Divide both of the numbers by 2, not just -150

Answer 14

Or