Answer must be a formula as well please go by what LINES things are on right now when graphing

A project that provides annual cash flows of $15,400 for nine years costs $67,000 today. What is the NPV if the required return is 8 percent? What if it's 20 percent? At what discount rate would you be indifferent between accepting the project and rejecting it? Complete the following analysis. Do not hard code values in your calculations. You must use the built-in Excel function to answer this