Choose the best graph that represents the linear equation: -x= 2y + 1

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.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Can someone me find the original price? the discount is 5% and the sale price is $68.40