anonymous
  • anonymous
.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Yeah it's definitely 74
anonymous
  • anonymous
3(-4x+7)+5 where x=-4
anonymous
  • anonymous
@GIL.ojei

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anonymous
  • anonymous
@Jumon233 thank you :)
anonymous
  • anonymous
it is the composition of two functions
anonymous
  • anonymous
right
anonymous
  • anonymous
is the question f(x) = 3x + 5 and g(x) = -4x + 7 fog?
anonymous
  • anonymous
is that the question
anonymous
  • anonymous
yes
anonymous
  • anonymous
now open the bracket?
anonymous
  • anonymous
can you?
anonymous
  • anonymous
so was my inital answer wrong then?
anonymous
  • anonymous
um where are those numbers coming from?
anonymous
  • anonymous
subtitute g(X) into F(x)
anonymous
  • anonymous
okay so i'm going to assume my initial answer was wrong.
anonymous
  • anonymous
ok
anonymous
  • anonymous
am i? You're not really say if I am or not.
anonymous
  • anonymous
f(x) = 3x + 5 and g(x) = -4x + 7
anonymous
  • anonymous
now put g(x) in f(x)..i.e 3(-4x+7) +5
anonymous
  • anonymous
yeah that's what I did above.
anonymous
  • anonymous
now , you have put g(x) in to f(x) by substituting -4x+7 into where you have x in F(x)
anonymous
  • anonymous
right
anonymous
  • anonymous
that will give -12x+21+5
anonymous
  • anonymous
now you where given x= -4
anonymous
  • anonymous
s0 , -12(-4) + 21+ 5
anonymous
  • anonymous
okay I see that you're just showing me a different way to do it. You were unclear about that.
anonymous
  • anonymous
but thank you
anonymous
  • anonymous
48+21+5=74 .. you are done

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