The pertinent inequality is $45 + ($0.25/mile)x ≤ $120. Solving for x:
($0.25/mile)x ≤ ($120-$45). This works out to 300 miles.
Eugene can drive up to 300 miles for $120.
Well, you can first subtract 45 from 120, giving you 75. Now, you divide 75 by 0.25, which gives
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