Question

The height, h, in feet, of an object thrown upward from a height of 144 feet is a function of time, t, in seconds. The height can be determined by the function h(t) -16t^2 + 128 + 144. The height of the object at 3 seconds is 384 feet. Why?

Answer 1

That should read:

h(t)=-16t^2+128t+144

h(3)=-16*9+128*3+144

h(3)=384