Which expression represents the composition [f. g] (x) for the functions below?

f (x) = 2x + 3

g (x) = x-6

2x-9

O 2x - 3

2x - 15

O 2x2 - 9x - 18

The answer is 2x-9

Explanation:

[f. g] (x) = 2 (x-6) + 3

2 times x = 2x

2 times - 6 = - 12

The positive 3 remains how it is

The equation after distributing is : 2x-12+3 simplify the - 12 + 3 = - 9

Your final equation will be 2x-9