2. What is the present value of: a) $500,000 to be received in 20 years at 5.75 percent? b) $2,000,000 to be received in 25 years at 6.50 percent? c) $80,000 to be received in 10 years at 3.75 percent? d) $30,000 to be received in 7 years at 8.00 percent