How do I work questions 2-4?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

1foot = 12 inches; 1 yard = 3 feet

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.