Problema Solution
The cellular phone service for a business executive is $35 per month plus $0.40 per minute of phone use. Write an equation for the number of minutes, m, used in a month when the executive's cellular phone bill was $102.20.
What is the equation?
Answer provided by our tutors
let number of minutes be m
35 + 0.40m = 102.20
m = (102.2 - 35)/0.40 =168 minutes