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GoldRush18

  • 2 years ago

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?

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

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

  3. ChmE
    • 2 years ago
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    it could be 7000 > 5x + 7y

  4. ChmE
    • 2 years ago
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    because she can't go over but can be under

  5. GoldRush18
    • 2 years ago
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    oh i get it

  6. GoldRush18
    • 2 years ago
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    bcuz the 7000 is her budget

  7. GoldRush18
    • 2 years ago
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    so wat about part b and c

  8. ChmE
    • 2 years ago
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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

  9. ChmE
    • 2 years ago
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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

  10. ChmE
    • 2 years ago
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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

  11. ChmE
    • 2 years ago
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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

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

  13. GoldRush18
    • 2 years ago
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    ok i got y=1000 and x=1400

  14. ChmE
    • 2 years ago
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    so those are the intercepts, What is the equation?

  15. GoldRush18
    • 2 years ago
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    |dw:1351254063633:dw|

  16. GoldRush18
    • 2 years ago
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    is it that?

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

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

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

  20. ChmE
    • 2 years ago
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    |dw:1351258124097:dw|

  21. ChmE
    • 2 years ago
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    So what do you think the answers are for c

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

  23. ChmE
    • 2 years ago
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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?

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

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

  26. GoldRush18
    • 2 years ago
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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

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

  28. GoldRush18
    • 2 years ago
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    the digicel changes because there was an increase in the cost.

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

  30. ChmE
    • 2 years ago
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    increase of decrease

  31. ChmE
    • 2 years ago
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    or**

  32. GoldRush18
    • 2 years ago
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    oh the x intercept decreases

  33. ChmE
    • 2 years ago
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    right. Good job and good luck

  34. GoldRush18
    • 2 years ago
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    omg thank u so much, im understanding so much better now

  35. ChmE
    • 2 years ago
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    What are your other questions?

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

  37. ChmE
    • 2 years ago
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    wow that assignment is awful

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

  39. GoldRush18
    • 2 years ago
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    taught*

  40. ChmE
    • 2 years ago
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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.

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

  42. GoldRush18
    • 2 years ago
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    ok

  43. GoldRush18
    • 2 years ago
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    thanks anyway

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