Respuesta :
The height of the object at 3 seconds is 384 feet.
We have given that,
h(t) =-16t^2 + 128 + 144.
Where h= height feet
time=t seconds.
What is the meaning of height?
The distance from the top to the bottom of something, or the quality of being tall
The height can be determined by the function h(t) =-16t^2 + 128 + 144
t= 3 seconds so plug the value of t=3 in h(t)
h(3)=-16×9+128×3+144
h(3)=384
Therefore, the height of the object at 3 seconds is 384 feet.
To learn more about the height visit:
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