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Nezavi [6.7K]
3 years ago
15

The cost C of printing a magazine is jointly proportional to the number of pages p in the magazine and the number of magazines p

rinted m. (Use k for the constant of proportionality.)
(a) Write an equation that expresses this joint variation.

(b) Find the constant of proportionality if the printing cost is $65,550 for 3800 copies of a 115-page magazine.


(c) How much would the printing cost be for 3500 copies of a 84-page magazine?
Mathematics
1 answer:
Andrew [12]3 years ago
6 0
A.) C = kpm

b.) 65,550 = k * 115 * 3800 = 437,000k
k = 65,550/437,000 = 0.15

c.) C = 0.15 * 84 * 3500 = $44,100
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