You and your spouse have brand new twin baby boys, and that makes three children. You realize that soon the time will come to purchase a minivan. If the estimated price of a two-year old, low-mileage Dodge Caravan mini-van in three years will be $18,000, how much money must you invest at the beginning of each month over the next three years if you can earn 3.25% annual interest with monthly compounding? O o O $475.41> O $476.70>