Suppose the path of the ball in Example 4 is f(u) = -02502-1 + 6.25. Find the balls initial and maximum heights.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅