I only need help with the last question: "At what discount rate would you be indifferent accepting the project and rejecting it?"

A project that provides annual cash flows of $18,200 for nine years costs $88,000 today. What is the NPV for the project if the required return is 8 percent? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) At a required return of 8 percent, should the firm accept this project? Accept Reject What is the NPV for the project if the required return is 20 percent? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) At a required return of 20 percent, should the firm accept this project? Accept Reject At what discount rate would you be indifferent between accepting the project and rejecting it? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)