Essay
The cost C of printing a magazine is jointly proportional to the number of pages p in the magazine and the number of magazines printed m
a)Write an equation that expresses this joint variation
b)Find the constant of proportionality if the printing cost is $120,000 for 4000 copies of a 120-page magazine
c)How much would the printing cost be for 2500 copies of an 85-page magazine?
Correct Answer:
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a) 
;
b) ...View Answer
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Correct Answer:
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;
b) ...
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