\text { The height, } h \text { metres, of a basketball } t \text { seconds after it is thrown, is given by the equation } h=-3(t-4)^{2}+16 What is

the vertex of this parabola? Does the vertex represent a maximum or a minimum? O What is the maximum height of the ball? ) How long does it take for the ball to reach its maximum height? e) What is the height of the ball after 5s? What is the height of the ball after 5s?