Question

The height of a ball t seconds after it's thrown into the air

from the top of a building can be modeled by h(t) = -16t? +
48t + 64, where h(t) is height in feet. After how many
seconds does the ball hit the ground?
0-1 sec
O 2 sec
O 4 sec
0 1.5

Answer 1

for the ball to get to the ground the h=0 no hight it is now in the base point.

substitute the value t=0 into the equation we get 64.

since we want to know the time in seconds then we should subtract 60 from 64 (64-60=4)

then my answer is 0-4.

I'm not sure it's correct just wait for others to respond