An amateur rocketry club is holding a competition. There is cloud cover at 1000 ft.
If a rocket is launched with a velocity of 315 ft/s from a 35 ft platform.
Use the function h(t) = -16t2 + vt + h to determine how long the rocket is out of sight!

for full credit (5 pts)
a) write function (1pt)
b) find y-int, x-int, vertex (3pts)
c) draw a diagram (1pt)