Algebra II Cliff Word Problem (See if you can solve it)

Question

The function y=16t^2+244 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 the stone to hit the ground? Round to the nearest hundredth of a second.

Answer 1

-16t^2 + 244 = 0

t^2 = 244/16 = 61/4

t = sqr(61)/2 = about 3.9 seconds to hit the ground