SAT II Math 2 Preparation

So I’ll be taking the Math 2 subject test soon, but it’s been a long time since I’ve taken pre-calculus.

I’ve done some homework, and Barron’s SAT II Math and Dr. Chung’s SAT Math II books pop up quite frequently. Can anyone who has taken the test offer some advice about what you did to prepare, what books you used, and some techniques to help land the 800?

Thanks!