SOLUTION: While on the golf course last weekend Marc hit into the rough landing the ball behind a tall tree. His best option was to get it high enough to get over the tree and hopefully co

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: While on the golf course last weekend Marc hit into the rough landing the ball behind a tall tree. His best option was to get it high enough to get over the tree and hopefully co      Log On


   

Question 976956: While on the golf course last weekend Marc hit into the rough landing the ball behind a
tall tree. His best option was to get it high enough to get over the tree and hopefully
come down in the fairway for his next shot. So with a mighty swing he hit the ball into
the air and was surprised to see the ball hit near the top of a 300 foot tall tower that
he had not noticed.
The formula is: h(x)= -16x^2 +20x where h is the height of the ball and
x is the number of seconds the ball is in the air.

How high did Marc actually hit the ball?

I am completely stuck on this question any assistance would be appreciated.
Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
y=-16X%5E2%2B20X
The vertex is
(-b/2a)= (-20/-32)= (5/8)sec
y=-16%28%285%2F8%29%5E2%29%2B%2820%29%285%2F8%29
6.25
.
It seems the ball was only 6.25 high.