Diana purchased a house for $425,000. He made a down payment of 30.00% of the value of the house and received a mortgage for the rest of the amount at 6.42% compounded semi-annually amortized over 20 years. The interest rate was fixed for a 5 year period.

a. Calculate the monthly payment amount. Round to the nearest cent

b. Calculate the principal balance at the end of the 5 year term. Round to the nearest cent

c. Calculate the monthly payment amount if the mortgage was renewed for another 5 years at 5.62% compounded semi-annually? Round to the nearest cent