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anonymous

  • one year ago

Matt sells burgers and sandwiches. The daily cost of making burgers is $520 more than the difference between the square of the number of burgers sold and 30 times the number of burgers sold. The daily cost of making sandwiches is modeled by the following equation: C(x) = 2x2 - 40x + 300 C(x) is the cost in dollars of selling x sandwiches. Which statement best compares the minimum daily cost of making burgers and sandwiches

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  1. anonymous
    • one year ago
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    It is greater for sandwiches than burgers because the approximate minimum cost is $250 for burgers and $292 for sandwiches. It is greater for sandwiches than burgers because the approximate minimum cost is $100 for burgers and $295 for sandwiches. It is greater for burgers than sandwiches because the approximate minimum cost is $295 for burgers and $100 for sandwiches. It is greater for burgers than sandwiches because the approximate minimum cost is $292 for burgers and $250 for sandwiches

  2. anonymous
    • one year ago
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    @triciaal HELP ?

  3. triciaal
    • one year ago
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    I am helping ! this is what I have so far

  4. triciaal
    • one year ago
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    |dw:1432963888967:dw|

  5. triciaal
    • one year ago
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    |dw:1432964031859:dw|

  6. triciaal
    • one year ago
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    the equation written with the question is for sandwiches when x = 0 then the cost = 300

  7. anonymous
    • one year ago
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    I Dont understand

  8. anonymous
    • one year ago
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    @Jack1 help ?

  9. Jack1
    • one year ago
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    tricalls back, she's doin awesome man, jus be patient

  10. triciaal
    • one year ago
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    |dw:1432964510506:dw|

  11. triciaal
    • one year ago
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    sorry, i'm missing something (more than just sleep)

  12. Jack1
    • one year ago
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    want a hand?

  13. triciaal
    • one year ago
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    what is the value of x when the costs are equal @Jack1 sure always feel free to join in

  14. anonymous
    • one year ago
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    So, the answer is: It is greater for burgers than sandwiches because the approximate minimum cost is $292 for burgers and $250 for sandwiches because it is about 1/2 the total when I make x=0 ? @triciaal & @Jack1

  15. Jack1
    • one year ago
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    not the correct answer

  16. anonymous
    • one year ago
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    ok

  17. Jack1
    • one year ago
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    The daily cost (C(z))of making burgers (z) is $520 more than the difference between the square of the number of burgers (z^2) sold and 30 times the number of burgers sold (30z). so as an equation for burgers: C(z) = z^2 - 30z + 520

  18. Jack1
    • one year ago
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    The daily cost of making sandwiches is: C(x) = 2x^2 - 40x + 300

  19. triciaal
    • one year ago
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    compare the cost when x = 4?

  20. Jack1
    • one year ago
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    cost (C) to make sandwiches (x) \(\large C(x) = 2x^2 - 40x + 300\) this equation is a parabola, lowest cost is at lowest point on parabola = turning point turning point is when the gradient = 0 gradient of a parabola is the derivative \(\large C(x) = 2x^2 - 40x + 300\) \(\large C'(x) = 4x - 40 \) so when gradient ( C'(x) ) = 0 \(\large 0 = 4x - 40 \) \(\large 40 = 4x \) \(\large x = 10 \) so lowest cost is when x = 10 (number of sandwiches = 10) what cost (C) is that tho? \(\large C(x) = 2x^2 - 40x + 300\) \(\large C(10) = 2(10)^2 - 40(10) + 300\) \(\large C = u solve this ???\) @zayyyc_

  21. Jack1
    • one year ago
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    then do the same for burgers (z) then you'll have ur answer ;)

  22. triciaal
    • one year ago
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    @Jack1 so 10 sandwiches and 4 burgers?

  23. Jack1
    • one year ago
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    i got 15 burgers for that parabola min point...?

  24. anonymous
    • one year ago
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    me to @Jack1

  25. triciaal
    • one year ago
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    for burgers yes 15

  26. Jack1
    • one year ago
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    cool @zayyyc_ so what did u get as the min cost for sangers, and whats the min cost for burgers?

  27. triciaal
    • one year ago
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    got it 295

  28. triciaal
    • one year ago
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    |dw:1432965929266:dw|

  29. Jack1
    • one year ago
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    yep, me too: $295 for 15 burgers is it's min, and $100 for 10x sandwiches is it's minimum cost... hope this helps?

  30. anonymous
    • one year ago
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    It is greater for sandwiches than burgers because the approximate minimum cost is $250 for burgers and $292 for sandwiches ?

  31. anonymous
    • one year ago
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    @Jack1

  32. Jack1
    • one year ago
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    nah man, sorry we know the min cost for sandwiches is $100 and the min cost for burgers is $295 so the only one that fits is C, yeah? It is greater for burgers than sandwiches because the approximate minimum cost is $295 for burgers and $100 for sandwiches.

  33. Jack1
    • one year ago
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    you following ok tho or need something explained a bit more? s 'cool if u do hey

  34. anonymous
    • one year ago
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    i got it thank you

  35. Jack1
    • one year ago
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    cool, props ;)

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