P9-8 Calculating NPV (LO1] A firm evaluates all of its projects by using the NPV decision rule. Year 0 1 2 3 Cash Flow -$27,000 23,000 14,000 5.000 a. At a required return of 17 percent, what is the NPV for this project? b. At a required return of 41 percent, what is the NPV for this project