Let f (x) = 4 + 5x and g (x) 2x - 1. Find f (g (x)) and g (f (x))

The answer to your question is:

a) 10x - 6

b) 7 - 10x

Step-by-step explanation:

Data

f (x) = 4 + 5x

g (x) = 2x - 1

a) f (g (x)) = 4 + 5 (2x - 1)

= 4 + 10x - 10

= 10x - 6

b) g (f (x)) = 2 (4 + 5x) - 1

= 8 - 10x - 1

= 7 - 10x