Question

Using his driver on the 7th tee, Chris hits an excellent shot, right down the middle of the fairway. The ball follows the parabolic path shown in the figure, described by the quadratic function: h(x)=0.5x-0.002x^2. This relates the height, h, of the ball above the ground to the distance x it has traveled down the course. Distances are measures in feet.

What is the ball’s maximum height above the ground and what distance x, from the tee, does this occur at?

Please teach me this question..