[A] What are the monthly payments for a 30-year, 9.00 percent, and fully-amortizing mortgage with initial contract principal of USD 120,000?
[B] Determine the outstanding loan balance after twelve years on the above 30-year, 9.00 percent, USD 120,000 loan with monthly payments?
[C] find out the amount of principal paid down and the amount of interest in the first payment in the above mortgage?