The function y = -16^2 + 486 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cliff. how long will it take to hit the ground? round to the nearest hundredth of a second.

a.) 7.79 seconds
b.) 0.25 seconds
c.) 5.51 seconds
d.) 11.02

step-by-step explanation:

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