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anonymous

  • one year ago

Given f(x)=2x+5 and g(x)=8x+2 then what is (f−g)(−9)) ?

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  1. anonymous
    • one year ago
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    @UsukiDoll think you could help please ?

  2. Vocaloid
    • one year ago
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    first off, (f-g)(x) = f(x)-g(x) = __ ?

  3. anonymous
    • one year ago
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    8x+2

  4. Vocaloid
    • one year ago
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    not quite f(x) = 2x + 5 g(x) = 8x + 2 f(x) - g(x) = ?

  5. anonymous
    • one year ago
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    -6x+7?

  6. Vocaloid
    • one year ago
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    not quite, check your math one more time f(x) - g(x) = (2x + 5) - (8x + 2) = ?

  7. anonymous
    • one year ago
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    -6x+3?

  8. Vocaloid
    • one year ago
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    good! so we know that (f-g)(x) = -6x + 3 so what is (f-g)(-9)= ?

  9. anonymous
    • one year ago
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    2x+14?

  10. Vocaloid
    • one year ago
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    uh... not quite x = -9 (f-g)(x) = -6x + 3 = ?

  11. anonymous
    • one year ago
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    8x+11?

  12. Vocaloid
    • one year ago
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    x = -9 means replace "x" with "-9" whenever you see it (f-g)(x) = -6x + 3 = ?

  13. Vocaloid
    • one year ago
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    if it's still unclear... (f-g)(x) = -6x + 3 = -6*(-9) + 3 = ?

  14. anonymous
    • one year ago
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    57?

  15. Vocaloid
    • one year ago
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    right

  16. anonymous
    • one year ago
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    so thats the answer?

  17. Vocaloid
    • one year ago
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    yes

  18. anonymous
    • one year ago
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    could you help me with a few more please ? @Vocaloid

  19. Vocaloid
    • one year ago
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    I need to get going, let me tag @Nnesha

  20. anonymous
    • one year ago
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    @Nnesha think you could help me with this one please Match the correct graph to the function shown. f(x)=2sqrt3-4x +3

  21. UsukiDoll
    • one year ago
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    @Vocaloid thanks for helping. I'm super exhausted right now and just want to browse OpenStudy.

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