Based on Exhibit 7-8, what would be the monthly mortgage payments for each of the following situations? (Round mortgage payment factors and final answers to 2 decimal places. Omit the "$" sign in your response.) a) A $104,000, 15-year loan at 6.0 percent APR compounded semi-annually $ b) A $89,000, 25-year loan at 9.5 percent APR compounded semi-annually $ c) A $101,000, 20-year loan at 9.5 percent APR compounded semi-annually $