Simplify the expression.
-5(-7d + 2)

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Does the point (1, sqrt 7) lie on circle shown.

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?