a. What is the present value of annuity of $3,000 per year, with the first cash flow received four years from today and the last one received 22 years from today if the discount rate is 8%?
b. What is the future value of an annuity of $5,000 per year, with the first cash flow being received today and lasting for 10 years (10 total payments of $4,000) if the interest rate is 8% annual.