a loan of 25,000 has the following terms. the nominal interest rate is 8% compounded monthly; there will be n payments of 489.9 each starting at the end of the first month; and there will be one larger payment at the end of n+1 months. immediately after the 18th payment, the borrower refinances the loan with a new 24 month loan with a nominal 4.5% rate compounded monthly. the first payment is due one month after refinancing. what is the new monthly payment?