Joe is standing at a Point P of a parking lot that is in the shape of a right triangle as shown in the diagram. There is a fence along the longest side of the lot. Joe's distance to the fence is 15 meters. There is a sign on the fence at Point C. The distance from A to C is 8 meters. If the width of the lot, segment a, p, is 17 meters, then how long is the fence, segment a, b?'

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.