Hey,
Just wanted to point out that Unit 3 is only worth 16% of your study score, so this SAC was worth 8% of your total study score.
It will definitely be very difficult to get 45+ not just because of your score but because it is very unlikely that you will suddenly go from 68% to 100%
I assume that the people that you have asked are your friends so they are probably not representative of your cohort.
I don’t know much about calculating study scores, but if you got 100% on every SAC and the exam I would think that you would get 45+ So it is possible.
Go through your SAC and if you got questions wrong because you don’t know the content, consider getting a tutor or asking your teacher/us a ton of questions. If you got them wrong because you ran out of time or misread the question, you need to do lots of practice questions.
tl;dr I think it’s possible, but it would require a lot of work.