You Have Two Cars

Multiple Choice

You have two cars. The first car travels an average of 11 miles on a gallon of gasoline, and the second averages 21 miles per gallon. Suppose you can afford to buy up to 45 gallons of gasoline this month. If the first car is driven x miles this month, and the second car is driven y miles this month, shade the region in the first quadrant that gives all the possible values of x and y that will keep you from buying more than 45 gallons of gasoline this month.

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