Solve 6x - 2 = 4x + 13 for x.
put it into fraction form

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).