Here's how I see your budget.
Rent: $450
Utilities (including your cell phone - your current rate is too expensive, btw): $150
Food (pack your lunch): $200
Transportation (I am assuming you are wise enough to take public trasportation): $100
Entertainment & Eat Out: $100
Miscellaneous : $100
So that brings your total expenses to $1100
Which means, you should be able to save $500 per month.
Obviously, it is not much. You will be able to accumulate $6000 a year.
You could take up a second job (preferably in cash) and increase your savings.
But you don't want to be in this state for more than couple of years at most. So, my suggestion to you is to bone up on GRE or GMAT and aim for graduate school so that your long term earning potential will be higher.