PRE CALC FOR SAT MATH 2 SUBJECT TEST

I know its necessary to know precalc, but I was just wondering how much of it do I need to know for the math 2 subject test. I plan to take it in a few months, and I have been studying precalc on my own for a month now. Its really hard and time consuming for me since I am self-studying, so I was wondering if anyone can tell me what precalc topics will and will not be on the math 2 test so I can just focus on the topics that actually will be on the subject test

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From the CB website:

Mathematics
Level
2

More than three years of college-preparatory mathematics,
including two years of algebra, one year of geometry, and
elementary functions (precalculus) and/or trigonometry.

If you have had preparation in trigonometry and elementary
functions and have attained grades of B or better in these
courses, select Level 2. If you are sufficiently prepared to take
Level 2 but take Level 1 in hopes of receiving a higher score, you
may not do as well as you expect.

ok thanks for the help