The interest rate for the first three years of an $93,000 mortgage loan is 8.7% compounded semiannually. Monthly payments are calculated using a 30-year amortization.

a.	What will be the principal balance at the end of the three-year term? (Do not round intermediate calculations and round your final answer to 2 decimal places.)
b.	What will be the monthly payments if the loan is renewed at 6.1% compounded semiannually (and the original amortization period is continued)? (Do not round intermediate calculations and round your final answer to 2 decimal places.)