A project has the following cash flows: What is the NPV at a discount rate of zero percent? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) NPV $ What is the NPV at a discount rate of 8 percent? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) NPV $ What is the NPV at a discount rate of 16 percent? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) NPV $ What is the NPV at a discount rate of 28 percent? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) NPV $