when you purchase your house you took out 30-year annual-payment mortgage with an interest rate of 6% per year. the annual payment on mortgage $12000....

a.you have live in a house for twelve year ( so are 18 year on mortgage)?b. you have live in the house of 20 year ( so there are ten left on the mortgage)?c. you have in the house for twelve year (so there 18 year left on the mortgage ), and you decide to pay of the mortgage immediately before the twelfth payment is due ?