You have been offered a unique investment opportunity. If you invest $9,100 today, you will receive $455 one year from now, $1,365 two years from now, and $9,100 ten years from now. a. What is the NPV of the opportunity if the cost of capital is 6.9% per year? Should you take the opportunity? b. What is the NPV of the opportunity if the cost of capital is 2.9% per year? Should you take it now? a. What is the NPV of the opportunity if the cost of capital is 6.9% per year? If the cost of capital is 6.9% per year, the NPV is $ (Round to the nearest cent.)