Adam Smith bought a home with a 13% adjustable rate mortgage for 20 years. He paid $11.72 monthly per thousand on his original loan. At the end of 4 years he owes the bank $75,000. Now that interest rates have gone down to 10%, the bank will renew the mortgage at this rate or Adam can pay $75,000. Adam decides to renew and will pay $9.66 monthly per thousand on this loan. You can ignore the small amount of principal that has been paid. What is the amount of the old monthly payment? $ a0 What is the amount of the new monthly payment? $ a1 What is the percent of decrease in his new monthly payment?

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.