Answer :
Given that Larry earns $7.25 after 1 hour, then after x hours, he will earn 7.25x dollars.
Last month he earned $348, then:
[tex]7.25x=348[/tex]Solving for x:
[tex]\begin{gathered} \frac{7.25x}{7.25}=\frac{348}{7.25} \\ x=48\text{ hours} \end{gathered}[/tex]Larry worked 48 hours