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anonymous

  • one year ago

given the following functions f(x) and g(x) solve f[g(7)] f(x) = 4x + 21 g(x) = 2x + 2 HELP IM SO CONFUSED I JUST NEED SOMEONE TO LAY IT ALL OUT

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  1. freckles
    • one year ago
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    Do you know how to find g(7)?

  2. anonymous
    • one year ago
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    No I don't know how to do any of it @freckles I need someone to kinda lay the whole thing out to me

  3. freckles
    • one year ago
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    g(x)=2x+2 g(7) means we should replace x's with 7's g(7)=2(7)+2

  4. anonymous
    • one year ago
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    Is it 85? Because g(7)=16. Plug in 16 for x in f which equals 85.

  5. freckles
    • one year ago
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    do you know how to simplify 2(7)+2?

  6. anonymous
    • one year ago
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    You should start with what is in the parenthesis which is g(7). For that you simply plug in 7 for x.

  7. anonymous
    • one year ago
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    85 is a choice.

  8. anonymous
    • one year ago
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    The answer is 85. Because after you get g(7)=16. you plug in 16 for x in f(g)

  9. anonymous
    • one year ago
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    16x4=64 64+21=85

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