If Brian wants to buy a house that cost $170000 the bank agreed to give him 80% of cost at 0.05 annual interest on a 15-year loan, what is his monthly payment? what is the monthly loan payment ? what is the interest paid in the first month? what is the principal paid in the first month? what is the interest paid in the second month? what is the principal paid in the second month? what is the total interest that was paid over the life of the loan