Show all your work in solving the problems. You don't need to provide formulas but do need to show all calculator keystrokes to get full credit for your answers. ( 60 points total -15 points each) 4. A local bank originated a 30-year mortgage for $450,000 two years ago with a rate of 5%. a. What is the current outstanding balance on the mortgage? b. What is the current market value of the mortgage if interest rates are now at 8% ? c. Explain the difference between your answers in A and B