Trying to understand the excel formula

(Net present value calculation) Big Steve's, makers of suzzle sticks, is considering the purchase of a new plastic stamping machine. This investment requires an initial outlay of $105.000 and will generate net cash inflows of $16.000 per year for 11 years What is the projects NPV using a discount rate of 8 percent? Should the project be accepted? Why or why not? & What is the project's NPV using a discount rate of 16 percent? Should the project be accepted? Why or why not? e. What is this projects internal rate of retum? Should the project be accepted? Why or why not