. Printing Costs The cost C of printing a magazine is jointlyproportional to the number of pages p in the magazine andthe 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$60,000 for 4000 copies of a 120-page magazine.(c) How much would the printing cost be for 5000 copies ofa 92-page magazine?
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Equations and inequalities describe the relationship between two mathematical expressions.
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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
. Printing Costs 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
$60,000 for 4000 copies of a 120-page magazine.
(c) How much would the printing cost be for 5000 copies of
a 92-page magazine?
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