anonymous
  • anonymous
If f(x) = 1/2 x + 2 and g(x) = −3x − 1, find g[f(4)]. −19 11 −13 −11
Mathematics
chestercat
  • chestercat
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KingGeorge
  • KingGeorge
If you're given something like g[f(x)], that means that you want to find f(x), and take that value, and plug into to g. For example: g[f(0)]: Since \(\displaystyle f(0)=\frac{1}{2}(0)+2=2 \) \( g[f(0)]=g(2)=-3(2)-1=-7\). Now can you do this with 4 instead of 0?
anonymous
  • anonymous
so iht would be -11
KingGeorge
  • KingGeorge
You're very close. You have f(4)=4 correct?

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anonymous
  • anonymous
i got it -13
KingGeorge
  • KingGeorge
Bingo.
anonymous
  • anonymous
thanx
KingGeorge
  • KingGeorge
you're welcome.
anonymous
  • anonymous
can yhu help with one other question to?

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