The Pattersons bought a $266,000 house. They made a down payment of $49,000 and took out a mortgage for the rest. Over the course of 15 years they made monthly payments of $1831.18 on their mortgage until it was paid off. (a) What was the total amount they ended up paying for the house (including X S r) the down payment and monthly payments)? ' $1] (b) How much interest did they pay on the mortgage? $l]