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keeponbleeding
 2 years ago
f(x) = sqrt(x+9); g(x) = 8x  13
Find f(g(x))
keeponbleeding
 2 years ago
f(x) = sqrt(x+9); g(x) = 8x  13 Find f(g(x))

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keeponbleeding
 2 years ago
Best ResponseYou've already chosen the best response.0Am I putting the g(x) in f(x) or vice versa? I know how to solve afterwards

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Your g(x) becomes then new x value f(8x13)

keeponbleeding
 2 years ago
Best ResponseYou've already chosen the best response.0f(g(x))= 8sqrtx4?

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1\(f(x)= \sqrt{x+9}\) Now since its f(g(x)) That is another way of saying f(8x13). Meaning we replace our x with 8x13 \( f(8x13)= \sqrt{(8x13)+9 }\) Now we have to simplify by opening the brackets \( f(8x13)= \sqrt{(8x4) }\) \( f(8x13)= \sqrt{4(2x1) }\) \( f(8x13)= 2\sqrt{2x1 }\)

keeponbleeding
 2 years ago
Best ResponseYou've already chosen the best response.0oh ok I think I got it, Im going to try it on my last problem now. thanks so mucH!

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1No problem. You can always just come back here and check if you got your answer correct :)
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