DIY 4

Question 1

Question 2(a)

Question 2(b)

Question 2(d)

Question 2(e)

Question 2(f)

Question 2(g)

Question 2(h)

Question 2(h)

Question 3(a)

Question 3(b)

Question 3(c)

Question 3(e)

Question 3(f)

Question 3(g)

Question 3(i)