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October 20, 2014

Homework Help: math

Posted by Jay on Monday, March 7, 2011 at 4:46pm.

A computer technician charges $40 for a house call and $38 per hour. The expression 40 + 38t is used to find the cost of a house call that lasts t hours.

What is the cost of a house call that last 3 hours?

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