An investment project costs $17,900 and has annual cash flows of $3,600 for 6 years. (Enter 0 when there is no payback period. Round your answers to 2 decimal places. (e.g., 32.16)) (a) What is the discounted payback period if the discount rate is 0 percent? Discounted payback period years (b) What is the discounted payback period if the discount rate is 3 percent? Discounted payback period years (c) What is the discounted payback period if the discount rate is 22 percent? Discounted payback period years Please show equation it helps to see where I went wrong