Respuesta :
x intercept is where y=0
y=height=f(t)
so where it equals 0 is at t=8
that means where the ball touches the ground
it touches the ground after 8 seconds is what it means
y=height=f(t)
so where it equals 0 is at t=8
that means where the ball touches the ground
it touches the ground after 8 seconds is what it means