Solve IRR and part a, b, c

Given the potential for more visitors, the town of Highland Falls is evaluating four mutually exclusive projects. Given the following net cash flows, use IRR in conjunction with Incremental Analysis to identify the best project. The MARR is 8%, compounded annually. Solve for the Internal Rate of Return for Project A. Write down the equation you would use to solve for the Internal Rate of Return for Project B. Do not solve! Based on the Internal Rates of Return, which projects would you continue to consider