The ACT is better for you if you can pound out simpler math questions in less time (you get 60 minutes to do 60 problems); the SAT math is better if you can handle questions that are trickier (i.e., there’s a shortcut you need to find to do it quickly). If you take the SAT, you do also need to memorize the basic formulas the SAT provides, but you really should know most of them in any event. ACT math asks you to plug values into some scary-looking formulas, and the SAT asks you to manipulate some formulas. If you get past the weird decimals, variables, etc., the actual math is very easy in both types of “formula” problems.
Author: John Linneball Who did you think? ;-)
I'm the proprietor and only tutor for this business; that's why I named it after me.