Texts: How to solve Q59 and Q61 please?
58. MOTION OF A PROJECTILE
A missile is projected vertically upward from an underground bunker in such a way that t seconds after launch, it is s feet above the ground, where s = -16t^2 + 800t - 15.
a. Sketch the graph of s.
b. Use the graph in part (a) to determine when the missile is at its highest point. What is its maximum height?
In Exercises 59 through 62, use the vertical line test to determine whether or not the given curve is the graph of a function.
59.
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