Mr M,
for 9bi) I incorrectly wrote 1 < y < 2 as i thought that r has to be between 0 and 1. Solving logs correctly? Would I obtain any marks whatsoever?
Also for 9bii) I put log to the base 2 of 64, instead of 8. Continuing with the correct method?
Would I obtain any marks for this also. Or does it stop once you go wrong. I always get confused about this?
And for the question 7, I'm also assuming that you would obtain no marks at all for using a decimal?