Answer: 11.3 or 11 if you are to round to nearest whole number.
Explanation:
Take the problem step by step.
You know she has the monthly fee and a fee for each gigabyte of data she stores in her house.
Take how much she paid and Subtract the monthly fee from it since it has been a month.
$60.95 - $14.95 = $36
Now take that answer and divide it by the cost of each gigabyte to see how many she used that month.
$65 / $5.75 = 11.30434743, which rounds to 11.3 or 11 if you are to round to nearest whole number.