English Adv. - 83 B5 (way fucking better than i thought lmao)
3u math - 93 E4
4u math - 89 E3
Physics - 86 B5 (ouch!!!)
Chemistry- 89 B5
Very happy. Went from being bottom of every class in yr 11 to top!
You could do a bridging course or just pick up the extension 1 books and learn it by yourself. I would probably advise trying to teach it yourself during the holidays and doing past papers to solidify your knowledge.
I ended up doing your subjects (except 3U english) and I did NOT regret it for a second. Very rewarding amd easy to get a good atar with, as long as you study. Definitely pick up 4U maths if you get the chance - you will not regret it. It will help you with 3U and the scaling is insane. Good...