susahhh banget kakakakkaka

Cari puncak parabolanya
t = -b/2a = -400/ 2(-5)
t = 40

h(t) = 400t - 5t²
h(40) = 400 x 40 - 5 x 40²
h (40) =16000 - 5 x 1600
h(40) = 8000

#semogaMembantu