The problem describes a debt to be amortized. (Round your answers to the nearest cent.) A man buys a house for $300,000. He makes a $150,000 down payment and amortizes the rest of the purchase price with semiannual payments over the next 7 years. The interest rate on the debt is 9%, compounded semiannually. (a) Find the size of each payment. $x (b) Find the total amount paid for the purchase. (c) Find the total interest paid over the life of the loan. $