An investment has the cash flow profile shown below: Year Cash Flow Year Cash Flow Year Cash Flow 0 -$70,000 4 $30.000 8 $15.000 1 $90.000 5 $ 20.000 9 $ 15.000 2. -$ 50.000 6 $10,000 10 $10,000 3 $20.000 7 $ 10,000 Using an internal rate of return analysis, from Descartes' rule of signs, what is the maximum number of positive internal rates of return? There are at most positive-valued internal rate of return solutions. Using an internal rate of return analysis, is Norstrom's criterion satisfied? Why or why not? , Norstrom's criterion satisfied, because cumulative cash flow changes signs time(s). Using an internal rate of return analysis, identify the real, positive-valued root for the polynomial equation used to calculate the internal rate of return. % Round entry to 2 decimal places. The tolerance is +0.05. If there is more than one positive-valued root, enter the minimum IRR