c3 maths help.

Modulus: How do you do questions on it? Also, does anyone have any good notes that they could share to help me understand it?

Secondly, I don't understand how to do:

Q7b, Q8aii and Q10a)ii from June 2013

and Q8d from June 2007 ( I don't know how they've integrated it).

I've posted the links below.
http://filestore.aqa.org.uk/sample-papers-and-mark-schemes/2013/june/AQA-MPC3-QP-JUN13.PDF

http://filestore.aqa.org.uk/sample-papers-and-mark-schemes/2007/june/AQA-MPC3-W-QP-JUN07.PDF

If someone could write out some solutions clearly so I can understand and follow through. That would be great :smile: