Answer:
65 feet
Step-by-step explanation:
Given
h(t) = - 16t² + 120t + 65
The firework is launched at t = 0, hence
h(0) = - 16(0)² + 120(0) + 65 = 0 + 0 + 65 = 65
The initial height, the height of the platform is 65 feet
