High School Pre Cal Homework?

L

lp6786

New member
I'm trying to figure this out and I keep getting the same answer that's not listed in the multiple choice.
f(x) = square root x + 9
g(x) = 8x-13

I keep getting square root 8x - 4.
Except its not one of the answer choices.
Do I need to simplify more
I put g(x) inside f(x) which is square root 8x-13 +9 and I get Sqaroot 8x-4?
Please help?
 
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