Only now, on this last day of class, on this last homework assignment, I finally get it. It's finally working, I'm actually doing the math right. They've finally taught us enough that I can make the connections I need, and it all makes sense now.
I am, at the moment, very glad that the final is worth approximately 45% of my grade, counting the exam grade it replaces in addition to its own 30% weight.
Also, this Mac in the ACM office has quite possibly the shittiest keyboard I have ever had the misfortune to type upon. The shift keys only work sporadically, and the spacebar physically sticks down, so I have to give it a good solid WHACK to make it actually activate, and it has to be directly over one of the sensors under the bar itself. Rrrgh.