Hello. I am new to this forum and I didn't know where to introduce myself, so here I am. I am a student in the 12th grade and I joined this forum because I have a competition to prepare for in four days. I'm rereading mt Algebra II book and my Adv. Math/Pre-Cal books to refresh my memory, and I'll ask if I get stuck. You might be seeing a lot more of me over the next few days...