An investment project has annual cash inflows of $3,400, $4,300, $5,500, and $4,700, for the next four years, respectively. the discount rate is 13 percent. a. what is the discounted payback period for these cash flows if the initial cost is $6,100? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.) b. what is the discounted payback period for these cash flows if the initial cost is $8,200? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.) c. what is the discounted payback period for these cash flows if the initial cost is $11,200? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.)\