Lindsey purchased a house for $350,000. She made a down payment of 30.00% of the value of the house and received a mortgage for the rest of the amount at 6.82% 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 6.62% compounded semi-annually?