Alexandria worked two part-time jobs last week. The first job paid $10 an hour, and the second job paid $13 an hour. She worked a total of 30 hours last week and earned $348.

How many hours did Alexandria work at the first job?

A) Write an equation you can use to answer this question. Let $\displaystyle {x}$ be the number of hours worked at the first job. Do not solve the equation yet.

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B) Use your equation to solve the problem.

Alexandria worked hours at the first job.