I'm tutoring high school students in Math for a local College and Career prep program and would like to have a reference book on hand that I can consult. I'm a Comp Sci graduate so I have a pretty strong background in Math but it's been a while since I used high school level Algebra and Geometry.
Are there any good reference books that I could have on hand to brush up if I run into something I don't remember? I typically just need to browse a short description and an example before things start coming back and I can help students. Preferably cheap, I probably won't need it very often after a few months of tutoring. The ideal book would be something that is quickly browsable with a concise description of topics, and maybe cross references to related topics.