I'm having a lot of difficulty in my college Pre-Calc class. The Problem is that since my high school wasn't very good I only took up to Algebra 2 and there is stuff we never covered so now that I'm in Pre-Calc there's stuff that is completely new to me. I was placed in this class because I managed to get a 25 on the Math section of the ACT but I never realized I wasn't at this class's level. So my question is, is there any websites, any books, or just any advice so that I can catch up on this?, I'm really behind so I really really need help ASAP please. Thanks in advance :]