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abbie1

Let f(x)=3x–42 and g(x) =5x. Part 1 What is (f ◦ g)(x) ? Part 2 Use complete sentences to describe the method you used to solve this problem.

  • one year ago
  • one year ago

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  1. ParthKohli
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    The question asks for \((f (g(x))\).

    • one year ago
  2. ParthKohli
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    You know that \(g(x) = 5x\). What is \(f(5x)\) then?

    • one year ago
  3. abbie1
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    Yes. So it's F(x)=15x-42...But what method is it??

    • one year ago
  4. abbie1
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    @ParthKohli ?? is that right and is it equal to F(x) or y?

    • one year ago
  5. ParthKohli
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    Yes!

    • one year ago
  6. ParthKohli
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    Sorry, I was late. You don't have any \(y\) in the equation, do you?

    • one year ago
  7. ParthKohli
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    Well, the method you understood.

    • one year ago
  8. abbie1
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    Yes but what's the name? Substitution? Thank you :)

    • one year ago
  9. ParthKohli
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    Yes, substitution maybe. I haven't heard of different methods: this one is the only one I know of.

    • one year ago
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