You and your significant other are contemplating the purchase of a home. Your combined family income is $80,000 per year. You know that mortgage lenders use a rule of thumb that the limit on the size of a mortgage loan is that no more than 30% of a family's income should go to the payment of principal and interest What is the maximum purchase value of a home that you and your partner could purchase, assuming that you have a 10% down payment through savings? Assuming year. Answer this question for the following four cases: a. with a 20-year amortization and an interest rate of 7% (5 points); b. with a 20-year amortization and an interest rate of 11% (5 points); c. with a 30-year amortization and an interest rate of 7% (5 points); d. with a 30-year amortization and an interest rate of 11% (5 points). one annual mortgage payment instead of 12 monthly payments per