P9-2 Calculating Payback [L02] An investment project provides cash inflows of $770 per year for 10 years. a. What is the project payback period if the initial cost is $1,540? ces b. What is the project payback period if the initial cost is $5,005? c. What is the project payback period if the initial cost is $8,470? P9-8 Calculating NPV [LO1] A firm evaluates all of its projects by using the NPV decision rule. Cash Flow Year 0 $28,000 21,000 13,000 8,000 3 ces a. At a required return of 26 percent, what is the NPV for this project? b. At a required return of 35 percent, what is the NPV for this project