Question 1

Video tutorial: Question 1

Question 2

Video tutorials: 2(a) | 2(b)(c)

Question 3

Video tutorial: Question 3

Question 4

Video tutorials: Question 4 | 4(c)

Question 5

Video tutorials: 5(a)(b) | 5(c)(d)

Question 6

Video tutorials: 6(a)(b) | 6(c)

Question 7

Video tutorials: 7(a)(b)(c) | 7(d)