Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Torrayani<3

  • 2 years ago

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

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

    5x=3???

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

    3x -1?

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

    @zaynahf

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

    Good.. now just substitute -1 for x

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

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

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

    -4!!

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

    Yep! You got it!

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

    thank you please come to my next post!

  12. zaynahf
    • 2 years 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

Sign Up
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.