Each week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

For all values, [x] denotes the least integer greater than or equal to x.  If -2.5 < x < 1.5, what is the least possible value of [2x] + [x²]?

See the answer choices and submit your pick over on our Challenge Problem page.