A Cannonball is shot from the top of a hill. The cannon coasts upwards for several seconds then falls back down to the ground. The height of the cannon (above ground) at anytime t, after it is released, is given by h = -5(t - 4) (t + 2) meters. How long is the cannonball in the air?

What is the maximum height reached by the cannonball, and after how many seconds does it reach its maximum height?

What is the initial height of the cannonball?