Mark all the statements that are true.
a. this graph is a function whose range is the set {3}.
b. the equation of this line is x = 3.
c. this graph is a function whose domain is the set {3}.
d. this graph is not a function because the value x = 3 is assigned to more than one y-value.
e. this graph is a function because the value of x is the same for every value of y.

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.