Asked by The doctor

A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superheroes height in feet as a function of time. The building is 612 feet high. Will the superhero make it over the building? Explain.
Answered by Steve
well, the max height is found at (6.25,625)

So, as long as he's not too far away when he tries to leap over the building, yes, he'll make it (as long as the building is sufficiently narrow).
Answered by The doctor
Thank you
Answered by Anonymous
A stone is thrown straight up, with an initial velocity of 20 meters per second and from an initial height of 2 meters. The height h of the stone after t seconds is described by the function: h(t) = 2 + 20t - 4.9t2. What is the stone’s average speed during the first two seconds of its flight?
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