Pls help me with this assignment PLS the two questions plss help me​

What could explain what happened when the time was equal to 120 minutes

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

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.