Hi, I've got had 28 questions to do for homework over the weekend (yup, my maths teacher is the devil himself), I've done most of it but there's a few questions that I can't for the life of me get.
Was just wondering if anyone could have a look at some of these and see if they can help out, I'm not asking for anyone to do all of it, just maybe if you can help out on a question or two. Most of you will find it very easy anyway.
Here you go
http://i27.tinypic.com/sg2t6x.jpg - for 15a I got b to be 6 but can't do b
Thank you very much, any help whatsoever is very much appreciated.