What is the area of the region defined by the inequalities: y < 2x + 3
y < 3 - 4x
y > -2x – 1

Which expressions are equivalent to -6 + 3m

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.

The radius of a sphere is 3 inches. which represents the volume of the sphere?