Answer:
Over 85 ft
Explanation:
The maximum height of the ball is going to be located at the vertex of the parabola. First you need to find the x (or t in this case) coordinate for the axis of symmetry. Using the equation for the axis of symmetry of a parabola:


After finding the t-coordinate for the vertex, then plug this value into the original equation to find the corresponding h-coordinate:
Assuming the equation is
,

So the vertex can be represented as (4.016, 87.6327)
The maximum height is over 85 ft.