1)

a) 6*x* – 10

b) 6*x*

2)

a) 28 – 15*x*

b) 20 – 15*x*

3)

a) *x*^{2} + 3

b) *x*^{2} + 6*x* + 9

**Working**

**Questions**

1) We have the two functions f(*x*) = 3*x* + 2 and g(*x*) = 2*x* – 4.

a) What is fg(*x*)?

b) What is gf(*x*)?

2) We have the two functions f(*x*) 10 – 5*x* and g(*x*) = 3*x* – 2.

a) What is gf(*x*)?

b) What is fg(*x*)?

3) We have the two functions f(*x*) = *x*^{2} and h(*x*) = *x* + 3.

a) What is hf(*x*)?

b) What is fh(*x*)?

4) We have the two functions below.

a) What is fg(*x*)?

b) What is gf(*x*)?

c) What is hg(*x*)?

d) What is hf(*x*)?

e) What is fh(*x*)?