Which shows the following expression using positive exponents? -3a^-2b^3/15a^-7b^-1

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Which of the following is an equation of a line parallel to the equation y=4x+1?

Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.