Question

A cell phone company charges $60 a month for up to 1 gigabyte of data. The cost of additional data is $0.05 per megabyte. If d represents the number of additional megabytes used and c represents the total charges at the end of the month, which linear equation can be used to determine a user's monthly bill?

Answer 1

Answer:
`c=60+0.05d`

Explanation:

Given

Company charges
`\$60` for
`1\ GB` data

and charges
`\$0.05/MB`

If c is the total cost and d represent no of additional megabyte then

Cost is given by the sum of fixed price + additional data charge

`c=60+0.05* d`

Therefore final charge is given by

`c=60+0.05d`