I did pretty much the exact same! But, for the last one how it was about the relationship between personal experiance and belonging, i contrasted the newspaper article and the experience as an immigrant and hence belonging to culture with the poem and the mushroomers experience being different...
Check the other thread that went up asking the same thing yesterday durrrr...
Anyway, depending on exam conditions
Business - between 80-86/100 in HSC
Adv Eng - between 85-95/105
2U Maths - NFI
Don't underestimate how fucking hard the HSC markers mark. You would probably have to scrap 2 marks of each of those if thats what you're getting in school.