Question

H(t) = -16t ² + 110t + 72

The function above models the height, h, in feet, of an object above the ground t seconds after being launched straight up in the air. What does the number 72 represent in the function?
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1 point
A The initial height, h, in feet, of the object.
B The maximum height, h, in feet, of the object.
C The initial speed, in ft per second, of the object.
D The maximum speed, feet per second, of the object.

Answer 1

A. The initial height, h, in feet, of the object.

Answer 2

A The initial height, h, in feet, of the object.

Explanation:

Let t = 0

h(t) = -16t ² + 110t + 72

h(0) = -16(0)² + 110 × 0 + 72

h(0) = 72

The height at time zero is 72.

72 is the initial height.

Answer: A The initial height, h, in feet, of the object.