SOLUTION: Standing on the top of a house 48 feet above the ground, Matt shoots a trick basketball shot upward according to the equation h = -16t2 + 32t + 48, where h is the height of the ba

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Question 1179932: Standing on the top of a house 48 feet above the ground, Matt shoots a trick basketball shot upward according to the equation h = -16t2 + 32t + 48, where h is the height of the ball in feet, and t is the time in seconds. How long will it take for Matt’s airball to hit the ground?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
h(t)=-16t^2+32t+48
set equal to 0, which is ground level and divide through by -16
so t^2-2t-3=0
(t-3)(t+2)=0
positive root is t=3 seconds.
graph%28300%2C300%2C-5%2C5%2C-25%2C75%2C-16x%5E2%2B32x%2B48%29