Sorry to bother those who are helping me but I simply just do not understand and really need help.

A single person could expect to pay $5220 in income taxes with an adjusted income gross of $29,000. If my adjusted gross increases to $2,000 but does not place me in a higher tax bracket how much can I expect to pay

well, since your tax bracket has not changed, you will still pay the same percentage.

5220/29000 = 18%

So, what is 18% of the new, greater income?