The costs (in dollars) of a repair call taking x hours or fraction thereof from companies A and B are, respectively, C1(x) = 20x + 40 and C2(x) = 10x + 50 (a) Graph C1 and C2 on the same set of axes. (b) For how many hours is the cost the same for either company?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The costs (in dollars) of a repair call taking x hours or fraction thereof from companies A and B are, respectively,

C1(x) = 20x + 40    and    C2(x) = 10x + 50


(a) Graph C1 and C2 on the same set of axes.

 

 


(b) For how many hours is the cost the same for either company?
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