Answer:
Step-by-step explanation:
This is very short if you know the answer.
g(5a) means that where ever you see x on the right, you put in 5a
So g(5a) = b(5a)- 9 The 9 does not come into it.
b*5a = 20a Divide by 5a
b*5a/5a = 20a/5a
b = 4
So g(x) = 4x - 9
