Which equation results from taking the square root of both sides of (x – 9)2 = 81? X-9 = +9
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X + 9 = +9
x + 3 = +9
X – 3 = +9

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Which shows the graph of the solution set of 3y – 2x > –18?