Konstantin wants to buy a house costing $850,000.00. He will make a down payment of $127,500.00 and take out a mortgage for the rest. The term of the mortgage is 3 years, and the amortization period is 20 years. Konstantin will make weekly payments and the mortgage rate is 14) = 9.500%. a) How much are the weekly payments? $ b) If Konstantin wants to reduce the weekly payments to $1,400.00, how much would the down payment have to be? $ If another bank offers Konstantin an equivalent mortgage (original down payment, same term, amortization period, payment periods) but with $1,594.86 weekly payments, what nominal interest rate r4 are they charging? % (Remember, write 3.456 not 0.034561) Certainty : C=1 (Unsure: 679) C=3 (Quite sure: >809)