Problema Solution
A cellular phone company offers several different service options. one option, for people who plan on using the phone only in emergencies, costs the user $4.85 per month plus $0.55 per minute for each minute the phone is used. Write a linear function for the monthly cost y of the phone in terms of the number of minutes x the phone is used.
Answer provided by our tutors
'x' is the number of minutes
total cost = 0.55x + 4.85