An investment project has annual cash inflows of $4,600, $3,700, $4,900, and $4,100, for the next four years, respectively. The discount rate is 13 percent. What is the discounted payback period for these cash flows if the initial cost is $5,500? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Discounted payback period years What is the discounted payback period for these cash flows if the initial cost is $7,600? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Discounted payback period years What is the discounted payback period for these cash flows if the initial cost is $10,600? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Discounted payback period years