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It's a latin acronym. I forget what the actual phrase is, but it translates into "which was to be demonstrated"

Let number of trees = t= 16 + x Let apples = a = 300 - 10x, as there is 10 less apples, per extra tree. yield = t x a = (300 - 10x) x (16 + x) = 4800 + 300 x - 160 x - 10 x^2 = -10x^2 + 140 x + 4800 QED

Probably the most helpful answer I've gotten. Many teachers and other students seemed adament that their idea was the best. But thanks, answers my question!

Why do you say 12?

I've been hearing things of different people as to how many units to keep for year 12. I tend to drift towards 10 units, so I'd be able to concentrate on fewer subjects in more depth. Your thoughts?

What sort of raw marks would you be looking at to state rank biology?