Please answer all parts showing full work and equations!

12. The Garnet Company has a project with the following cash flows: a. (7 pts) What is the project's payback period? Interpolate to the nearest month. Should the company accept the project if their company policy is to accept projects with payback periods of 3.5 years or less? Why or why not? b. (7 pts) What is the project's NPV at 9% ? Should the company accept the project based on NPV? Why or why not? c. (7 pts) What is the project's PI at 9% ? Should the company accept the project based on PI? Why or why not? d. (7 pts) Calculate the IRR (HINT: Start by using 10\%). (Interpolate to the nearest tenth \%) Should the company accept the project based on IRR? Why or why not