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Asked Dec 11, 2019
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Carole's car averages 17.4 mi/gal in city driving and 25.7 mi/gal in highway driving. If she drove a total of 523.9 mi on 22 gal of gas. Write the system of equations. (Note: The question is not asking you to solve the system. However, you may want to solve it and use the solution to check the validity of the system of equations.)

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Let the amount of gallons in city and highway driving be x and y. Carole's car averages 17.4 miles per gallon in city driving, then for x gallons the car average will be17.4.x. Carole's car averages 25.7 miles per gallon in highway driving, then for y gallons the car averages will be 25.7y.

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