The maximum whole number of gigabytes of data she can use while staying within her budget is 3 gigabytes.
From the information, Khloe pays a flat cost of $52 per month and $4 per gigabyte, or part of a gigabyte and she wants her bill to be under $65.
Let the number of gigabytes be represented by x.
Therefore, this will be:
52 + 4x < 65
Collect like terms
4x < 65 - 52
4x < 13
x < 13/4
x < 3.25
Therefore, the highest gigabytes that she can buy will be 3 gigabytes.
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