Aurora has a cell phone plan that charges $65 for phone service plus $12 for each gigabyte of data used each month.

If her bill for September is $113,
,
how many gigabytes of data did she use in September?



Write and solve an equation to answer this question. Please provide both your equation and its solution in the blank provided. You will receive 5 points for the equation, and 5 points for your work and answer