SOLUTION: Suppose you are starting an office cleaning service. You have spent $315 on equipment. To clean an office, you must use $4 worth of supplies. You charge $25 per office. How many of

SOLUTION: Suppose you are starting an office cleaning service. You have spent $315 on equipment. To clean an office, you must use $4 worth of supplies. You charge $25 per office. How many of

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Question 713501: Suppose you are starting an office cleaning service. You have spent $315 on equipment. To clean an office, you must use $4 worth of supplies. You charge $25 per office. How many offices must you clean to break even? (Solve using system of linear equations)
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
Number of offices is r.

Spend: 4*r+315

Revenue: 25*r

how many offices, r, will make "spend" and "revenue" equal?
4r+315=25r
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