PLEASE SOLVE MANUALLY DONT USE ANY SOFTWARE ALSO TYPE IT SO I CAN EASLY COPY DONT POST PICTURES OF THE SULOTION

Problem 7 A manufacturer of heavy-tow carbon fibers (used for sporting goods, thermoplastic compounds, windmill blades, etc.) reported the net cash flows below. (a) Determine the number of possible rate of return values, and (b) find all rate of return values between _50% and 120%. Year Net Cash Flow, $ 0 -17,000 1 20,000 2 - 5,000 3 8,000