Question

The equation, C = 0.15(x – 200) + 9.95, represents a cell phone company’s monthly charge, C, for a text messaging service, where x represents the number of text messages per month. What is the best interpretation of the slope?

Answer 1

It represents the charge per number of text messages sent in a month.

Explanation:

In this problem, we have the following equation:

$C = 0.15(x-200) + 9.95$

We are said that:

C: Represents a cell phone company’s monthly charge for a text messaging service.

x: Represents the number of text messages per month.

So we can write our equation in Slope intercept form:

$C = 0.15(x-200) + 9.95 \\ \\ C=0.15x-30+9.95 \\ \\ C=0.15x-20.05$

Where:

$Slope:m=0.15 \\ \\ y-intercept:b=-20.05$

So the best interpretation of the slope is:

It represents the charge per number of text messages sent in a month.

Learn more:

System of equations: https://brainly.com/question/13799715

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