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sam works as a tutor for $12 an hour and as a waiter for $15 an hour. this month, he worked a combined total of 90 hours at his two jobs. let t be the number of hours sam worked as a tutor this month. write an expression for the combined total dollar amount he earned this month.

User SimonDos
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Since Sam is working 90 hours per job you just multiply 90(12+15) once you have multiplied both number it should leave you with 1080+1350=$2430
User Horia Dragomir
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