Explanation:
I am assuming the function is h(t) = -16 x t2 + 400 (which is the usual form of this type of function)
So we have h(2) = -16 x 22 + 400 = 336 and
h(3) = -16 x 32 + 400 = 256 So the object fell 80 feet between 2 and 3 seconds.
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