The student store sells pencils for $0.75 each and erasers for $0.25 each. A student can buy a bundle that consists of 2 pencils and 1 eraser for a $0.50 discount. The table shows the costs for different numbers of bundles. # of Bundles Cost
12 $15.00
16 $20.00

Is the relationship between the number of bundles purchased and the cost proportional?
Explain how you know using the given table.
Describe what the graph of the relationship would look like.
Enter your answers and your explanation in the space provided.

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.