A) The effective annual interest rate of a loan is 6.8% (note: it is not the APR). The customer needs to make 4 payments each year. The loan must be paid off in 5 years. Suppose the principal of the loan is $68,312. The payment in each period is $_____.

B) The APR of a loan is 5.3%. The customer needs to make 5 payments each year. The loan must be paid off in 13 years. Suppose the principal of the loan is $63,491. Find the balance remaining on the loan after 6 years.

C)The APR of a loan is 6.1%. The customer needs to make 3 payments each year. The loan must be paid off in 13 years. Suppose the principal of the loan is $53,783. Find the simple sum of interest payments that the customer makes in the first 7 years.