Stephanie purchased a house for $350,000. She made a down payment of 15.00% of the value of the house and received a mortgage for the rest of the amount at 4.02% compounded semi-annually amortized over 20 years. The interest rate was fixed for a 6 year period. a. Calculate the monthly payment amount. Round to the nearest cent b. Calculate the principal balance at the end of the 6 year term. Round to the nearest cent c. Calculate the monthly payment amount if the mortgage was renewed for another 6 years at 4.22% compounded semi-annually