By and large anything beyond simple algebra is garbage, and just another means by which colleges and universities use to steal more money from thier students. Any math problem that results in an answer that contains a variable is pretty much a waste of time. I just finished an algebra course for my degree that the University deemed "absolutley critical to adminstering medication" I have previous experience adminstering IV medication and I have never encountered a situation where I had to give someone a dose of 0.05XY squared milligrams of atropine.