Answer
G
Work Step by Step
The monthly cost is 20 dollars.
The extra cost of 0.1 dollars will be added to the monthly cost of 20 dollars for every minute(m).
So, the equation results in 20 + 0.1m.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.