A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Consider the functions f(x) = x2 − 13 and g(x) = x + 5. What is the value of f[g(−4)]? −12 3 −13 8

  • This Question is Closed
  1. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    first find \(g(-4)\)

  2. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(g(x) = x+5\) \(g(-4)=?\)

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x-20?

  4. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Nope, you need to replace "x" by "-4"

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I am confused.

  6. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Easy, \(g(x) = x+5\) \(g(-4)=-4+5 = 1\)

  7. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(f(g(-4)) = f(1) = ?\)

  8. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    find the value of \(f(1)\) and you're done!

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is it D?????? 8?????????????

  10. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    nope, don't guess haha

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ._.

  12. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(f(x)=x^2-13\) \(f(1)=?\)

  13. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    replace \(x\) by \(1\) on right hand side expression

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So -12?????

  15. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes!

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    THANK YOU!!!!!!

  17. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ganeshie8 can you check 1 for me?

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    If (9x − 4)(9x + 4) = ax2 − b, what is the value of a? The value of a is _____________. Numerical Answers Expected! Answer for Blank 1:

  20. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is it 81??

  21. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct!

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh okay thank you so much!

  23. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yw

  24. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.