@LEAH99,
The formula is h(t) = h0 + v0 t + 1/2 a t^2 where
ho is the initial height
v0 in the initial
vertical velocity = 50 * sin(45)
a is the acceleration due to gravity = -32 ft/sec^2
t is time
Plugging in what you provided,
h(t) = 200 + 50 (sin 45) t - (1/2) 32 t^2