Use Exhibit 5.9. What would the monthly payments be on a $105,000 loan if the mortgage were set up as: a. A 15-year, 5.5 percent fixed-rate loan. Round the answer to the nearest cent per month b. A 30-year adjustable-rate mortgage (ARM) in which the lender adds a margin of 2.5 to the index rate, which now stands at 3.0 percent. Find the monthly mortgage payments for the first year only. Round the answer to the nearest cent. per monts