The balance on a mortgage was $48,400 and an interest rate of 4.50% compounded semi-annually was charged for the remaining 3-year term. Monthly payments were made to settle the mortgage. a. Calculate the size of the monthly payments. $0 Round up to the next whole number b. If the monthly payments were set at $1,539, how long would it take to pay off the mortgage? 0 years o months Express the answer in years and months, rounded to the next payment period c. If the monthly payments were set at $1,539, calculate the size of the final payment. $0.00 Round to the nearest cent