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April 18, 2015

April 18, 2015

Posted by **lille** on Wednesday, September 14, 2011 at 7:56pm.

- algebra -
**bobpursley**, Wednesday, September 14, 2011 at 8:00pmcosts= fixed cost + variable cost

income=15*books

if income is > than costs

15*B>3500+4B

11B>3500

B>327, so B must be 328 so that income is greater than costs.

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