What 4a+7b+5a-b please sorry

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

9/10 divide by -3/15 as a mixed number

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.