mm, if youre feeling down about your shit marks, try teasing the kid who's coming last, im sure that will make you feel much better, boost your confidence, and according to jeff geha 'a confident frame of mind can add up to 5% to your marks'
dont freak out yet, you're cutting 7.08/15 is just cutting half way, so i would stress about that mark, and as for 10/30, in my class, 4 out of 6 kids failed the first assessment , the lowest getting 10/50, and our teacher thinks he did great, and maybe needs a little more work, but didnt even recommend he drops it or anything [i disagree with 10/50] but im just saying, raw marks in ext 2 are generally low. A maths tutor told me that if you can attempt at least half the paper in a 4u exam, youre doing ok. Admittedly youre probably not on the yellow brick road the mathematical genius, but hell, dont slash your wrists just yet.