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# Problems with Math watch

1. Hi everyone

I am struggling to do some exercises on my math website. They do not have the answers
Could anyone of you help me with these problems?

http://gyazo.com/b548e8425832cc83606b001bab0473e9

Thank you
2. ill do the first one so you can see what theyre after:

the first one is asking you to take the output from f(x) and make that the input to g(x). - i.e. so you have

(think of it as where X =f(x) )
3. On the website this is the only one I got right. I am not sure how to do the second and third one. I was thinking for the second one 23x-9 I don't know sure how to get the right answer.

(Original post by Hasufel)
ill do the first one so you can see what theyre after:

the first one is asking you to take the output from f(x) and make that the input to g(x). - i.e. so you have

(think of it as where X =f(x) )
4. for the first one so, and we just replace g(x) with giving:

h(g(x)) is a little trickier:

so, and we just replace g(x) with giving:

You try the others...(same principle - you want 2^(something))

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