BALLOON PAYMENT MORTGAGES Emilio is securing a 7 -year balloon mortgage for $\$ 280,000$ to finance the purchase of his first home. The monthly payments are based on a 30-year amortization. If the prevailing interest rate is $4.5 \% /$ year compounded monthly, what will be Emilio's monthly payment? What will be his balloon payment at the end of 7 years?