8. You are thinking about opening your own business. You expect the following total cash flows from this project. Assume 15% as the required return. (Total 30 points) a. What is the payback period for this project? (5 points) b. What is the discount payback period for this project? (5 points) c. What is the net present value? (5 points) d. What is the profitability index? (5 points) e. What is the IRR? (5 points)