anonymous
  • anonymous
Let f(x) = 9x - 2 and g(x) = -x + 3. Find f(g(x)). -9x - 2 -9x + 5 -9x + 25 -9x + 27
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I don't know how to solve both of them together :l
ivettef365
  • ivettef365
just substitute the x from f(x) for (-x+3)
anonymous
  • anonymous
i tried to solve f(x) and got x + 2 over 9

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ivettef365
  • ivettef365
ok, you have on f(x) = 9x -2 now substitute the x for -x+3 and you have 9(-x+3) -2 now solve
anonymous
  • anonymous
ok first i need to distribute right?
ivettef365
  • ivettef365
correct
anonymous
  • anonymous
-x(9) + 3(9)
anonymous
  • anonymous
simplified to -x9 + 27?
ivettef365
  • ivettef365
remember the -2 so it is -9x + 27 -2
anonymous
  • anonymous
yeah
anonymous
  • anonymous
alright so whats next?
ivettef365
  • ivettef365
that's it, so -9x + 27 -2 you can combine 27 -2 and you get -9x + 25
anonymous
  • anonymous
sweet, thanks man! could u help me with 2 more?
ivettef365
  • ivettef365
sure

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