A toy rocket is fired into the air from the top of a barn. Its height h above the ground in yards after t seconds is given by the function h(t)=−5t2+10t+20. The initial height of the rocket is blank feet above the ground. The rocket reached its maximum height after blank second(s).

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A: Given : h(t)=−16t2+64t+120

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A: You can solve the given problem by using the quadratic formula.

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Q: When a ball is tossed into the air, the height h is feet of the ball t seconds from the time that…

A: ht=-16t2+80t+4 Comparing with ht=at2+bt+c, we get a=-16, b=80 & c=4 Now maximum value occurs at,…