Question 587625
you are doing fine

h(100) = -32(100)^2 / 130^2 + 100

h(100) means the height of the ball when the ball has traveled 100 ft horizontal distance.

it is not h*(100)

{{{h(100) = (-32(100)^2 / 130^2) + 100}}}

h(100) = -18.93+100

h(100) = 81.07 ft.

Similarly you plug x=500 on the right side of the equation