A football is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 64t where t equals the time in seconds and h(t) represents the height of the ball at time t seconds. What is the axis of symmetry, and what does it represent? t = __; it takes___seconds to reach the maximum height and ___seconds to fall back to the ground
i do not undertand...