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Jason hired a luxury car service. The service charges a driver rate of $4.92, regardless of number of miles traveled, plus an additional $3.79 per mile. If Jason wants to spend no more than $4.20 per mile, what is the minimum number of mile should travel

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  1. Today, 15:31
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    Let's make two expressions.

    4.92+3.79x

    This represents the car service's cost, which x being miles.

    4.2x

    This is the most Jason wants to spend. Let's make them equal.

    4.92+3.79x=4.2x

    We need to get x by itself, Let subtract 3.79x from both sides.

    4.92=0.41x

    Let's divide.

    4.92:0.41=12

    So, he should not drive no more than 12 miles.
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