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A project has the following cash flows: What is the NPV at a discount rate of 0% ? (Omit \$ sign in your response.) NPV \$ What is the NPV at a discount rate of 10% ? (Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit \$ sign in your response.) NPV \$ What is the NPV at a discount rate of 20% ? (Negative answer should be indicated by a minus sign. Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit \$ sign in your response.) NPV \$ What is the NPV at a discount rate of 30% ? (Negative answer should be indicated by a minus sign. Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit $ sign in your response.) NPV \$