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5 June, 18:49

Lamar works as a tutor for $7 an hour and as a waiter for $8 an hour. this month he worked a combined total of 92 hours at his two jobs let t be the number of hours lamar worked as a tutor this month. write an expression for the combined total dollar amount he earned this month

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  1. 5 June, 20:18
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    t is the number of hours Lamar worked as a tutor

    We know that he worked for 92 hours total, so he worked 92-t hours as a waiter.

    So his earnings are: 7t + 8 (92-t) = 736 - t dollars

    This expression seems logical as if Lamar worked 0 hours as a tutor and 92 as a waiter his earnings would be 8*92 = 736

    If he worked as a tutor for 92 hours it would be 7*92 = 644

    736-92 = 644

    So our expression seems to be working.
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