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GoldRush18

Sandra uses two mobile cell phones( a digicel and a lime phone), to make her monthly calls. Sandra budget only $7000 on telephone calls per month and the cost per minute for digicel and lime are $5.00 and $7.00 respectively. a. Write down the algebraic equation for Sandra's budget constraint. b. Graph then Sandra's budget constraint. ( the budget constraint intercepts should be shown clearly on the graph) c. How will an increase in the cost per minute for digicel call affect the budget line's y_intercept, x-intercept and the slope?

  • one year ago
  • one year ago

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  1. ChmE
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    a) 7000 = 5x + 7y , where x is digicel and y is lime

    • one year ago
  2. GoldRush18
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    i had that for a and i thought mine was wrong, now im understanding :)

    • one year ago
  3. ChmE
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    it could be 7000 > 5x + 7y

    • one year ago
  4. ChmE
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    because she can't go over but can be under

    • one year ago
  5. GoldRush18
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    oh i get it

    • one year ago
  6. GoldRush18
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    bcuz the 7000 is her budget

    • one year ago
  7. GoldRush18
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    so wat about part b and c

    • one year ago
  8. ChmE
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    part b is asking for a budget constraint line and part be also said equation for budget restraint. I would put 7000 = 7x + 5y as the answer for part a because that is the restraint line. Something that she can't go over

    • one year ago
  9. ChmE
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    part b is kinda difficult. You should solve for y so the equation is in y = mx + b form then you can graph it. label your axis according to what cell phone. So if we solve for y, the y axis will be the lime phone

    • one year ago
  10. ChmE
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    part c I would just pick an increased amount for the cost per minute. graph that as well, and you should easily be able to see the differences from there

    • one year ago
  11. ChmE
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    let me know what you got solving for y or x and I'll check you. You should be fine from there

    • one year ago
  12. GoldRush18
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    oh im not good at graphs thats why i need the help

    • one year ago
  13. GoldRush18
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    ok i got y=1000 and x=1400

    • one year ago
  14. ChmE
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    so those are the intercepts, What is the equation?

    • one year ago
  15. GoldRush18
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    |dw:1351254063633:dw|

    • one year ago
  16. GoldRush18
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    is it that?

    • one year ago
  17. ChmE
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    7000 = 5x + 7y 7000 - 5x = 7y 1000 - (5/7)x = y The graph looks correct.

    • one year ago
  18. ChmE
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    lets change the cost of digicel to 10 for easy math sake

    • one year ago
  19. ChmE
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    7000 = 10x + 7y (0,1000) (700,0)

    • one year ago
  20. ChmE
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    |dw:1351258124097:dw|

    • one year ago
  21. ChmE
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    So what do you think the answers are for c

    • one year ago
  22. GoldRush18
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    i think that as the cost per minute for digicel increase then the budget line will become steeper, is it?

    • one year ago
  23. ChmE
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    Because the x and y can easily be switched between the diff cell phones make sure you are stating your assumption of what x and y are along the way. You shouldn't be wrong because it doesn't say what each should be. That is correct. Technically it gets more negative. laymen's term steeper. What about the intercepts?

    • one year ago
  24. GoldRush18
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    ok thanks i knw what u mean but im not sure how to explain it in terms of intercepts.

    • one year ago
  25. ChmE
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    Look at the lime intercept of the 2 graphs. Do they change? same for the digicel, do they change

    • one year ago
  26. GoldRush18
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    ok the y axis which is lime does not change but the x axis which is digicel changes when price increase, im trying to answer

    • one year ago
  27. ChmE
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    correct for lime, it stays the same. How does the digicel change

    • one year ago
  28. GoldRush18
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    the digicel changes because there was an increase in the cost.

    • one year ago
  29. ChmE
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    correct but in what way does it change? That is how you need to answer this question

    • one year ago
  30. ChmE
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    increase of decrease

    • one year ago
  31. ChmE
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    or**

    • one year ago
  32. GoldRush18
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    oh the x intercept decreases

    • one year ago
  33. ChmE
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    right. Good job and good luck

    • one year ago
  34. GoldRush18
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    omg thank u so much, im understanding so much better now

    • one year ago
  35. ChmE
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    What are your other questions?

    • one year ago
  36. GoldRush18
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    do u have an email address, its in a word document

    • one year ago
  37. ChmE
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    wow that assignment is awful

    • one year ago
  38. GoldRush18
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    i know right, and its like we have to research it because they haven't though us as yet

    • one year ago
  39. GoldRush18
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    taught*

    • one year ago
  40. ChmE
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    is this due on monday? If this my my assignment I'd be all over google. Even copy and past questions in. Sometimes you get lucky.

    • one year ago
  41. ChmE
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    I took econ 3 years ago. I can't remember the other questions sry.

    • one year ago
  42. GoldRush18
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    ok

    • one year ago
  43. GoldRush18
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    thanks anyway

    • one year ago
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