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6th Edition

Stewart + 5 others

Publisher: Cengage Learning

ISBN: 9780840068071

Chapter 1.11, Problem 31E

**(a)**

To determine

**To express:** The given joint variation as equation.

Expert Solution

The joint variation for given equation is

Cost of printing a magazine is jointly proportional to the number of pages

Jointly proportional:

Consider the equation,

Here,

Here,

According to the given statement

Write the given statement as,

Here,

m is number of magazine printed.

Thus, the equation of given statement is

**(b)**

To determine

**To find:** The constant of proportionality

Expert Solution

The value of constant of proportionality is

**Given:**

Cost of printing

Number of magazine

Number of pages in the magazine

**Calculation:**

Substitute $

Thus, the value of proportionality constant

**(c)**

To determine

**To find:** The printing cost *C*.

Expert Solution

The cost of printing is $

**Given:**

Number of magazine

Number of pages in each magazine

**Calculation:**

Substitute

Thus, the value of