Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

LaynaMae

  • one year ago

Help please ?

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

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

    @ganeshie8 I only have 4 more questions ! D:

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

    good :)

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

    Yay so you're willing to help ? :)

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

    yes why not for a brilliant student like u, its easy to explain :)

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

    Great ! Thank you so so much ! You have no idea how much I appreciate it :)

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

    ok, so Juliana has $24 in her pocket. and she wants to knw how many text messages she can send

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

    Right

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

    she knows that \(f(x) = (3x+2)/4 \) gives the cost, when u put number of messages x into the equation

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

    for example, if u have texted 10 messages cost wud be :- f(10 ) = (3(10)+2)/4 = 32/4 = 8 so it wil cost u $8 just to text 10 msgs... pretty costly !!

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

    Okay makes sense !

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

    but thats not wat we want, here our task is to find a function, into which we can plugin the MONEY we have, and it should tell us how many TEXTS we can message

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

    I tried working it out and got 18.5 ..

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

    right ?

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

    I think I'm getting ahead of myself here haha i apologize

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

    And yes , right :)

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

    its okay, but 18.5 messages for $24 doesnt look correct

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

    let me show u how to do this step by step

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

    Please and thank you !

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

    given equaiton :- \(y = f(x) = (3x+2)/4 \) here, x is number of texts, y is dollars

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

    since you wanto know how many texts u can send, you need to solve x above.

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

    \(y = (3x+2)/4\) solve x

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

    How would I start off ?

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

    multiply 4 both sides

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

    4(3x+2) ?

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

    \(y = (3x+2)/4\) multiply 4 both sides \(4y = 3x+2\)

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

    next, subtract 2 both sides

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

    \(y=(3x+2)/4 \) multiply 4 both sides \(4y=3x+2\) subtract 2 both sides \(4y-2 = 3x\) divide 3 both sides \(\large \frac{4y-2}{3} = x\)

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

    now, replace x and y (just do it, il tell you later why :))

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

    replace x & y \(\large \frac{4x-2}{3} = y \) \(\large y = \frac{4x-2}{3} \)

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

    Isn't it to put the equation in the correct form ?

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

    thats the required function, where u need to plugin x=$24, and it gives u number of text messages u can send !

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

    exactly ! you're right, we replace x and y, to put the function in right form :)

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

    Yay :D

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

    put x = 24, and see how many messages she can send

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

    Wait so that's the answer ?

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

    yes thats the required function ! since the question wants u to explain, explain wat we did so far :)

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

    btw, for $24, she can send :- \(\large y = \frac{4x-2}{3}\) \(\large y = \frac{4(24)-2}{3}\) \(=33\)

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

    sorry, that should be 31, so she can send 31 messages

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

    So with $24 she can send 33 text messages ?

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

    *31

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

    Oh okay :) So everything we just worked through is the answer basically ? Because it says to put in complete sentences

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

    yes ! ima hav dinner... brb :)

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

    Haha okay !

  45. 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.