Question

A soccer ball is kicked from the ground with an initial upward velocity of 90 feet per second. The equation h=-16t^2+90t gives the height "h" of the ball after "t" seconds.
Find the maximum height of the ball.

Answer 1

126.56 feet

This can be found by finding the vertex of the parabola. You can find the t value using -b/2a and then plug that in to find the h value.