An investment project provides cash inflows of $1,275 per year for eight years. a. What is the project payback period if the initial cost is $4,100? (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 $5,150? (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 $11,200? (Enter 0 if the project never pays back. Do not round intermediate calculations and round your answers to 2 decimal places, e. g., 32.16.)