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anonymous

  • one year ago

Given the following functions f(x) and g(x), solve f[g(7)] and select the correct answer below: f(x) = 4x + 21 g(x) = 2x + 2 16 49 85 784

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  1. anonymous
    • one year ago
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    @campbell_st

  2. anonymous
    • one year ago
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    @e.mccormick @Elsa213

  3. anonymous
    • one year ago
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    @ali2x2 @heretohelpalways

  4. anonymous
    • one year ago
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    @ganeshie8 @thomaster

  5. triciaal
    • one year ago
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    work "inside out"

  6. triciaal
    • one year ago
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    find g(7) and use this value for x in f(x)

  7. anonymous
    • one year ago
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    okay.

  8. triciaal
    • one year ago
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    note that you will get the same result if you substitute the expression first then do the number last

  9. anonymous
    • one year ago
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    x=7g-2 -------- 2

  10. anonymous
    • one year ago
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    @triciaal

  11. triciaal
    • one year ago
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    no

  12. triciaal
    • one year ago
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    |dw:1439410483025:dw|

  13. anonymous
    • one year ago
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    g(7)=16

  14. triciaal
    • one year ago
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    |dw:1439410539696:dw|

  15. anonymous
    • one year ago
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    85?

  16. anonymous
    • one year ago
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    c?

  17. triciaal
    • one year ago
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    no question mark! yes good job.

  18. anonymous
    • one year ago
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    Can you also help with this: Given the following functions f(x) and g(x), solve (f + g)(5) and select the correct answer below: f(x) = 8x − 13 g(x) = x − 9 23 27 31 40

  19. triciaal
    • one year ago
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    |dw:1439410763924:dw|

  20. triciaal
    • one year ago
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    you can do the substitution first it's ok

  21. anonymous
    • one year ago
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    okay so 8*5 − 13+5-9 40-13+5-9 27+-4 23?

  22. anonymous
    • one year ago
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    A?

  23. triciaal
    • one year ago
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    yes

  24. anonymous
    • one year ago
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    one more... Given the functions f(x) = 7x + 13 and g(x) = x + 2, which of the following functions represents f[g(x)] correctly? f[g(x)] = 7x + 15 f[g(x)] = 7x + 27 f[g(x)] = 7x^2 + 15 f[g(x)] = 7x^2 + 27

  25. anonymous
    • one year ago
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    is it A?

  26. triciaal
    • one year ago
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    no

  27. anonymous
    • one year ago
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    C? I know you are adding 15, so

  28. triciaal
    • one year ago
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    g(x) is your x in f(x)

  29. triciaal
    • one year ago
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    |dw:1439411160771:dw|

  30. triciaal
    • one year ago
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    to simplify you expand the parenthesis and group like terms

  31. anonymous
    • one year ago
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    7*x+15

  32. triciaal
    • one year ago
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    NO

  33. triciaal
    • one year ago
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    read my directions click on the pencil to the right of the box and continue

  34. anonymous
    • one year ago
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    |dw:1439411604907:dw|

  35. anonymous
    • one year ago
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    @triciaal helloo?

  36. triciaal
    • one year ago
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    |dw:1439411682435:dw|

  37. anonymous
    • one year ago
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    so b

  38. triciaal
    • one year ago
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    when you distribute you multiply each term inside the parenthesis by what is outside

  39. triciaal
    • one year ago
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    yes

  40. anonymous
    • one year ago
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    thanks!

  41. triciaal
    • one year ago
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    you are welcome

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