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when am i going to use 3 variables system of equations in life? smiley

off-topic
 Oct 11, 2017
 #1
avatar+290 
0

hm... you should go and ask google

 Oct 11, 2017
 #2
avatar+99297 
+1

in business.

You may need one variable for quantity, one for cost (as a function of quanity) and one for revenue (as a function of quanity)

Put these together and you can make a model for profit.

 Oct 11, 2017

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