# Chapter 2 - Equations, Inequalities, and Problem Solving - 2.7 Solving Applications with Inequalities - 2.7 Exercise Set - Page 140: 24

$x\leq 4$ dollars per gallon.

#### Work Step by Step

Let the cost of gasoline per gallon be $x$. The cost of gasoline was at most 4 dollars per gallon can be translated as: $x$ is less than or equal to 4. $x\leq 4$ dollars per gallon.

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