If you could include work and formulas that would be great, thanks!

A 9-year annuity pays $3,000 per month, and payments are made at the end of each month. The interest rate is 9 percent compounded monthly for the first four years, and 7 percent compounded monthly thereafter. What is the present value of the annuity? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Present valuc References eBook & Resources