A mortgage for a condominium had a principal balance of $48,400 that had to be amortized over the remaining period of 7 years. The interest rate was fixed at 4.12% compounded semi-annually and payments were made monthly. a. Calculate the size of the payments. Round up to the next whole number b. If the monthly payments were set at $764, by how much would the time period of the mortgage shorten? year(s) months c. If the monthly payments were set at $764, calculate the size of the final payment