You bought your house 5 years ago, and your original home value when you bought it was $500,000, you paid 25% down and you financed closing costs equal to 4% of the mortgage amount. The mortgage was a 30 year fixed rate mortgage with a 6% annual interest rate. Rates on 30 year mortgages are now at 4% if you pay 2 points. Your refinancing costs will be 1.5% of the new mortgage amount (excluding points). You won't finance the points and closing costs this time. A new down payment is not required. (change numbers) a. What is your refinancing amount? (6 points) b. What is the monthly mortgage payment saving if you refinance? (3 points) c. What are the refinancing costs? (2 points) d. What is the breakeven number of periods between refinancing costs and monthly mortgage payment savings? (3 points)