For the below cash flows: (a) Determine the number of positive roots to the rate of return relation by performing Descarte's rule of signs and Norstrom's criterion tests. (20 points) Year Cash Flow, $ 0 1 2 3 4 5 -500,000 400,000 0 0 2,000,000 - 1,500,000 For the below cash flows: (a) Determine the number of positive roots to the rate of return relation by performing Descarte's rule of signs and Norstrom's criterion tests. (20 points) Year Cash Flow, $ 0 1 2 3 4 5 -500,000 400,000 0 0 2,000,000 - 1,500,000