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.