3x+2y=8 and x+5y=7 how do i get the answer

Which of the following is the true for f(x) = 5cos

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.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b