An investment project provides cash inflows of $1,325 per year for eight years. a. What is the project payback period if the initial cost is $4,200? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) b. What is the project payback period if the initial cost is $5,250? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) c. What is the project payback period if the initial cost is $11,600? (Enter O if the project never pays back. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) years a. Payback period b. Payback period c. Payback period years years