The TLK cell phone company has a basic cell phone plan. This plan includes unlimited talk and text but charges a monthly phone charge fee of $25.00 per month plus $5.00 per 1 GB of data that is used for that month.
Write a linear equation that models the monthly cost
(
C
)
of the cell phone based on the number of data GB,
(
d
)
, used.
C
=
If your monthly cell phone bill was $73.00, how many GB of data did you use?