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Math·Advanced Math·Nonlinear functions

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An object is kicked from a platform. The equation $h=-4.9t^2+13t+15$ represents this situation, where $h$ is the height of the object above the ground, in meters, $t$ seconds after it is kicked. Which number represents the height, in meters, from which the object was kicked?

A

$0$

B

$4.9$

C

$13$

D

$15$