OpenStudy (anonymous):

HELP! Given f(t)=-16t^2+80t+4 represents the height of a baseball after being hit. a. Re-write f(t) in f(t)=a(t-h)^2+ k b. what is the max. height of the ball? c. if the ball was caught at a height of 68 cm , how long was the ball in the air?

5 years ago
OpenStudy (saifoo.khan):

Convert the equation into completing square form!

5 years ago
OpenStudy (anonymous):

but I don't know how to do that, I didn't learn that at'l

5 years ago
OpenStudy (anonymous):

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5 years ago