An investment project provides cash inflows of $1,200 per year for eight years. a. What is the project payback period if the initial cost is $3,950 ? (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 $5,000 ? (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 $10,600 ? (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.) Answer is complete but not entirely correct