I am a freshman in university, and my major requires that I take a general chemistry course. I actually enjoyed chemistry in high school, so I actually am taking an honors chemistry course.
Long story short, I am sort of lost on how to divide up my studying. We have a book of past exams...
I'll try to take a stab at what you're getting at :)
For limits, we are concerned what y-value the function is headed for. It doesn't matter if there is a hole or something at that point, because the limit never actually equals the value x is headed towards. It can get infinitely close...