i just need part b

Loan Payment A. Assume you borrow $100,000 for a house. You are going to look at different payment options. Look at the time periods of 15, 20, 25, and 30 years. Look at interest rates from 5.5% thru 7.5 % in percent increments. Find the amount of the monthly payments for each case (20 cases) Also for each case show the total amount of interest paid at the end of the loan. You can find a mortgage calculator on the internet. B. Use 7% rate and 30 year loan but make one additional payment a year Calculate monthly payments, total amount paid for house over life of house and years to actually pay off