A new investment opportunity for you is an annuity that pays $750 at the beginning of each month for 3 years. You could eam 5% on your money in other investments with equal risk. What is the most you should pay for the annuity? Your father is considering purchasing an annuity that pays $1,000 at the beginning of each month for 15 years. He could eam 2.5% on his money in other investments with equal risk. What is the most he should pay for the annuity