Question 2:

Question 3:

Question 4:

Question 5:

Question 5.a:

Question 5.b:

Question 6:

Question 7:

Question 9, 11 & 17:

Question 10:

Question 12:

Question 12.a:

Question 12.b:

Question 12.c:

Question 12.d:

Question 12.e:

Question 12.f:

Question 13:

Question 14:

Question 15:

Question 15.a:

Question 15.b:

Question 15.c:

Question 15.d:

Question 15.e:

Question 15.f:

Question 15.g:

Question 15.h:

Question 15.i:

Question 16:

Question 17:

Question 18:

Question 20: