I never know where to put commas; I either put them in way too many or none at all. What are some basic rules for commas?
Generally, you can think of it this way: any time you have a phrase that can stand on its own, there should be a comma somewhere. A lot of punctuation is sadly just learning rules and recognizing what it is that you are writing.
How do factor quadratic equations quickly?
Knowledge of multiplication facts is super important for factoring. Most of the time it can be trial and error until your mind picks up on patterns. I do know a specific trick or two to make it easier though.
What if I'm a slow reader, and I find it difficult to read all the passages and answer all the questions within the tie limit?
My best advice is to keep an eye on the clock and keep a solid pace. Taking multiple practice tests is the best way to get a feel for it. You want to read the passages, but bottom line, you'll need to at least read the sentence surrounding the question to figure out the correct answer.