Based on Exhibit 7-7, what would be the monthly mortgage payments for each of the following situations? (Round your answers to 2 decimal places.) Use a calculator, instead of Exhibit 7-7.

a.	A $159,500, 25-year loan at 7.5 percent.
b.	A $217,500, 20-year loan at 7.5 percent.
c.	A $199,500, 25-year loan at 7.5 percent.