Please answer the question and explain how you got it!

A firm evaluates all of its projects by using the NPV decision rule. Year ON Cash Flow -$ 31,000 18,000 16,000 5,000 3 a. At a required return of 27 percent, what is the NPV for this project? NPV s b. At a required return of 36 percent, what is the NPV for this project? NPV