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A hawk soars above the gateway building. The height of the hawk, in feet, at any...

A hawk soars above the gateway building. The height of the hawk, in feet, at any time, t in seconds is modeled by the following function h(t)=-5t^4+48t^3+28x+60

a) What was the maximum height of the hawk?

b) At what time did the hawk reach this height?

c) At a certain time, the hawk lands on the ground and the height function is no longer valid after this time. When does the hawk land on the ground?

Math   Precalculus   
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