Which of the following is a true statement? (round to the nearest tenth as needed)

a. if 9z = -3, then z = 0.
b if 9z = 3, then z = 0.
c if 9z = 3, then z = -12
d if 9z = 3, then z = 3
e i don't know

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.