answer both question in 30 minuts i have exam

Use the following cash flow diagram to solve problems 7 and 8 . You may solve them in either order. For full credit, show how you obtained your answer. Begin each calculation with a formula, and include units in your calculations and answers. 7. Calculate FW at the end of year 5 for the project shown in the cash flow diagram above, if MARR is 12% per year. 8. For the same cash flow diagram, calculate PW if MARR is 12% per year