SOLUTION: If one of you has a moment can you please help. A ball is propelled upward from ground level. After t seconds, its height in feet is a function defined by f(t)=-16t^2 + 96t.

Question 411661: If one of you has a moment can you please help.
A ball is propelled upward from ground level. After t seconds, its height in feet is a function defined by f(t)=-16t^2 + 96t. After how many seconds will it reach a height of 144 feet?
a. 2 seconds
b. 3 seconds
c. 4 seconds
d. 6 seconds
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

(I just figured it out- pretty simple)

The answer is (b)
check answer:

OK
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