anonymous
  • anonymous
.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
their all negative options. I just didn't notice there weren't there sorry.
anonymous
  • anonymous
replaced x with -4
anonymous
  • anonymous
isn't it g(x)*f(x)*(-4)

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More answers

anonymous
  • anonymous
are you familiar with these?
anonymous
  • anonymous
actually what i hav studied is that f(x) or g(x) can be written as f or g and f'g is f multiplied g
anonymous
  • anonymous
I think there's a few ways you can actually do it.
anonymous
  • anonymous
there is also braces for (f'g) separating it from (-4)
anonymous
  • anonymous
@dan915 @amilapsn
anonymous
  • anonymous
those ways can change the entire ans. actually!
anonymous
  • anonymous
@nincompoop
anonymous
  • anonymous
yeah
amilapsn
  • amilapsn
Here's the question is \((g\circ f)(x)\) right?
anonymous
  • anonymous
yeah
amilapsn
  • amilapsn
Here's the thing: \[(g\circ f)(x)=g\left( f(x)\right)\\ gf(x)=g(x)\times f(x) \] right?
amilapsn
  • amilapsn
that circle between g and f means g "of" f
Astrophysics
  • Astrophysics
Still confused? It's the same as before g(f(4))
Astrophysics
  • Astrophysics
Same sort of question
anonymous
  • anonymous
I did g(f(-4)) = 3(4x+7)-5 but that's wrong
anonymous
  • anonymous
so now I'm going through everything again
Astrophysics
  • Astrophysics
That's g(f(x)), you're on the right track g(x) = 3x-5 and f(x) = 4x+7 g(f(x)) = 3(4x+7)-5 for g(f(1)) we plug in 1 now where the x is. g(f(1)) = 3[4(1)+7]-5
anonymous
  • anonymous
oh I was doing -4 but I do 1 I guess.
Astrophysics
  • Astrophysics
Oh oops it's -4
anonymous
  • anonymous
oh
Astrophysics
  • Astrophysics
g(f(-4)) = 3[4(-4)+7]-5
Astrophysics
  • Astrophysics
You're doing it right then, why doubt yourself? :P
anonymous
  • anonymous
The other people helping me were showing me different things so I just assumed I was wrong. I was feeling really confident about it actually. Anyways I was right and the answer is -32.
Astrophysics
  • Astrophysics
Yay :)
anonymous
  • anonymous
!!

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