You had $21 to spend on three pens .After buying them you had $12 how much did each pen cost

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

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

The graph is supposed to show f(x) = 3 sin (x/4+1) - 1/2. which of the following are correctly represented in the graph? select two of the following that apply.