On a forward somersault dive, Nina's height, h, in metres, above the water is approximately modelled by the function h(t) = -5t^2+ 7t + 4,
where t is the time, in seconds, after she leaves the diving board. Graph
the function and use the graph to complete the following. a) Find Nina's
maximum height above the water. b) How long does it take her to reach
the maximum height? c) How long is it before she enters the water? d)
How high is the board above the water?

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Ineed to know how to write question one in mathematical terms

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