A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Flvs.net

  • one year ago

Medal and fan if you help me.

  • This Question is Open
  1. Flvs.net
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Naomi works in a music shop and earns $42 per day. She earns an extra $2 for each CD she sells. If Naomi wants to earn at least $80 per day, which inequality shows the minimum number of CDs, n, that she should sell? A. 42 + 2n ≤ 80, so n ≤ 19 B. 42 + 2n ≥ 80, so n ≥ 19 C. 42 + 2n ≥ 80, so n ≥ 36 D. 42 + 2n ≤ 80, so n ≤ 36

  2. Flvs.net
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Can you help?

  3. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    the key word here is "at least" which implies that she wants to earn at "the least" $80 per day So: \(\ge 80\)

  4. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    she is already earning 42, so you can just stick that into the equation

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

    Then what do I do, I don't understand how to do this kind of math.

  6. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    it's fine :) Then, you would use the variable "n" to represent the amount of cd's; the 2 coefficient before "n" represents how much each cd sold earns you ($2). Therefore, your equation is: 42+2n \(\ge 80\)

  7. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    then solve the inequality and find out how many cd's that the person must sell in order to earn AT LEAST 80 dollars a day. Try this on your own, but I will guide you along the way if you need

  8. Flvs.net
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So how do I do it?

  9. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    Solve this like a regular equation.

  10. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    like so: 42+2n \(\ge 80\) 1.) subtract 42 from both sides: 42+2n \(\ge 80\) -42 -42 ---------- 2n \(\ge 80\) 2.) divide 2 from both sides

  11. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    from here: 2n \(\ge 80\), can you solve for me?

  12. Jamierox4ev3r
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 3

    @Flvs.net let me know if you get this. pm me if you have further questions, I can check your work ^_^

  13. 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.