You should call your state to verify. I called NYS and verified that NY test takers would be allowed to bring practice exams and worked problems. Another poster on here called and was referred to NCEES who told him the same thing.
A simple call to verify is more than worth the trouble of showing up with practice exams etc. and being told you can't use them. The instruction's clearly state no pens, pencils etc. Food/drink seem to differ by State - for NY, no food or drink is allowed in the exam room.