Question

Given the following situation:

A cell phone company offers a data package by charging $20 a month plus $12 per gigabyte of data used. Write a linear equation
that relates the cost C, in dollars, to the amount of data used. Use it to determine the amount of data used if they charge you
$116.

Answer 1

9514 1404 393

Answer:

• C = 20 +12g
• 8 gigabytes

Explanation:

At $12 per gigabyte, the data charge will be 12g where g is the number of gigabytes. Then the total charge is ...

C = 12g +20

__

If C = 116, the value of g is found from ...

116 = 12g +20

96 = 12g . . . . . . . subtract 20

8 = g . . . . . . . . . . divide by 12

The amount of data used is 8 gigabytes if the charge is $116.