Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Torrayani<3

  • one year ago

4. If f(x) = 4x + 1 and g(x) = −x − 2, find (f + g)(−1).

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

    What (f+g)(-1) means is to add up the two binomials first f(x)+g(x), and then substitute -1 for x. What do you get when you do: 4x+1-x-2

  2. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    5x=3???

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

    There's no = sign, just simplify it by adding like terms: First do 4x-x, and then 1-2

  4. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    3x -1?

  5. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @zaynahf

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

    Good.. now just substitute -1 for x

  7. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so it's going to be -1x or -3x

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

    No, because you are substituting something for x, there will be no more x. Do this: 3(-1)-1

  9. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -4!!

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

    Yep! You got it!

  11. Torrayani<3
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thank you please come to my next post!

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

    Sure..

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.