Answer:
She used 4 gigabytes of data in September.
Explanation:
Hi, to answer this question we have to analyze the information given:
- Phone service plan: $65
- Cost per gigabyte: $12
- Bill: $113
So, to find the number of gigabytes that she used we have to write an equation:
65 + 12x = 113
Where:
x = number of gigabytes
Solving for x
12x = 113-65
12x =48
x = 48/12
x =4
She used 4 gigabytes of data in September.