An Investment project provides cash inflows of $615 per year for eight years. a. What is the project payback period if the initial cost is $1,750? (Enter O if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.) b. What is the project payback period if the initial cost is $3,400? (Enter O if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.) C. What is the project payback period if the initial cost is $5,100? (Enter O if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.) ed ces a. 2.60 X years b. Payback period Payback period Payback period 5.20 years c. 0 years