Question 4 (10 points) The Zaidis arrange a mortgage amortized over 30 years at 9% per year compounded semi-annually. Here is part of an amortization table for the mortgage. a) How much did the Zaidis borrow? b) How much of the 1st payment is principal? How much is interest? c) Explain why the interest payments will decrease each month while the principal payments will increase each month. d) Using the mortgage calculator from the lesson, how much interest will the Zaidis pay over the life of the mortgage? e) Suggest two strategies that the Zaidis can use to reduce the interest costs on their mortgage. Why will these strategies reduce the interest costs? Payment Monthly Interest Principal Outstanding number payment paid paid balance 0 $80 000.00 $634.27 $589.05 $79954.78 $79 909 23