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October 19th, 2018, 09:59 AM  #1 
Senior Member Joined: Jan 2017 From: US Posts: 113 Thanks: 6  Cost, Revenue, & Breaking Point
Hello, This is the first time I have had these types of problems, and I am kinda lost. If anyone could point me in the right direction with them it would be greatly appreciated. I attached pictures of the problems I am having trouble with. I know how to find the cost function individually, but I am not sure how to do them both together with the breaking point. Thanks! 
October 19th, 2018, 10:19 AM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,169 Thanks: 1141 
I assume the break even point is when $C(x) = R(x)$ This reduces these three problems to pretty trivial algebra. See if you can take it from here. 

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