Problem 1: In January 1, 2007, Sammy Sosa offers to buy Mark Grace's used snowmobile for $8,000, payable in 5 equal installments, which are to include 8.25% interest on the unpaid balance and a portion of the principal. If the first payment is to be made on January 1, 2007, how much will each payment be?
Problem 2: Repeat the requirements in A, assuming Sosa makes the first payment on December 31, 2007.