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  1. #1
    Angus is ready.... supacrazymonkey's Avatar
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    Who's really good in Calculus??!! reps for f-ckin life

    A manufacture has been selling 1300 television sets a week at 420 dollars each. A market survey indicates that for each 13 -dollar rebate offered to a buyer, the number of sets sold will increase by 130 per week.
    a) Find the demand function p(x), where x is the number of the television sets sold per week, assuming that p(x) is linear.

    b) How large of a rebate should the company offer to a buyer, in order to maximize its revenue?

    c) If the weekly cost function is 91000+140x, how should it set the size of the rebate to maximize its profit?



    got a lot more questions. mainly the business application ones are f-cking me up the azzhole

    this one too

    The demand for apples is given by the equation xp=200 , where x is the number of pounds demanded and p is the price per pound. If the price is increasing at a rate of 0.25 dollars per week, when the demand is 10 pounds, at what rate is the

    (a) revenue changing
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  2. #2
    Registered User mikew152's Avatar
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    u need to call out asian miscers bro....
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  3. #3
    Angus is ready.... supacrazymonkey's Avatar
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    supacrazymonkey is offline
    (1 pt)
    Determine the equation of the tangent line at the value x=3 for the function f(x)=6x+10x-1.

    The slope-intercept form of the equation of the tangent line at the value x=3 is
    y= .
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  4. #4
    nice toes man cut.copy's Avatar
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    Do you need this today? MIGHT help you out tonight.
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  5. #5
    Angus is ready.... supacrazymonkey's Avatar
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    supacrazymonkey is offline
    Originally Posted by cut.copy View Post
    Do you need this today? MIGHT help you out tonight.
    I need it now actually...
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  6. #6
    Registered User cuongp's Avatar
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    Originally Posted by supacrazymonkey View Post
    A manufacture has been selling 1300 television sets a week at 420 dollars each. A market survey indicates that for each 13 -dollar rebate offered to a buyer, the number of sets sold will increase by 130 per week.
    a) Find the demand function p(x), where x is the number of the television sets sold per week, assuming that p(x) is linear.
    R=P(Q) P=420-x, Q=1300+10x
    (420-x)(1300+10x)= -10x^2+2900x+546000

    b) How large of a rebate should the company offer to a buyer, in order to maximize its revenue?
    R'=-20x+2900=0, x=145, check, -10(145)^2+2900(145)+546000=-210250+420500+546000=756250(max rev.)

    c) If the weekly cost function is 91000+140x, how should it set the size of the rebate to maximize its profit?
    P=R-C=(-10x^2+2900x+546000)-(91000+140x)=-10x^2+2760x+455000
    P=-20x+2760=0, x=138, check, -10(138)^2+2760(138)+455000=-190440+380880+455000=645440 (max profit)



    got a lot more questions. mainly the business application ones are f-cking me up the azzhole

    this one too

    The demand for apples is given by the equation xp=200 , where x is the number of pounds demanded and p is the price per pound. If the price is increasing at a rate of 0.25 dollars per week, when the demand is 10 pounds, at what rate is the
    a) Find the demand function p(x), where x is the number of the television sets sold per week, assuming that p(x) is linear.
    R=P(Q) P=420-x, Q=1300+10x
    (420-x)(1300+10x)= -10x^2+2900x+546000

    b) How large of a rebate should the company offer to a buyer, in order to maximize its revenue?
    R'=-20x+2900=0, x=145, check, -10(145)^2+2900(145)+546000=-210250+420500+546000=756250(max rev.)

    c) If the weekly cost function is 91000+140x, how should it set the size of the rebate to maximize its profit?
    P=R-C=(-10x^2+2900x+546000)-(91000+140x)=-10x^2+2760x+455000
    P=-20x+2760=0, x=138, check, -10(138)^2+2760(138)+455000=-190440+380880+455000=645440 (max profit)

    The demand for apples is given by the equation xp=200 , where x is the number of pounds demanded and p is the price per pound. If the price is increasing at a rate of 0.25 dollars per week, when the demand is 10 pounds, at what rate is the

    a)XP=200, X=10, P=20
    P=1.25P, R=XP, R'=12.5, Rev is inc. 12.5% every week

    hope this helps
    Last edited by cuongp; 03-11-2010 at 08:18 AM.
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  7. #7
    Registered User cuongp's Avatar
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    cuongp is offline
    Originally Posted by supacrazymonkey View Post
    (1 pt)
    Determine the equation of the tangent line at the value x=3 for the function f(x)=6x+10x-1.

    The slope-intercept form of the equation of the tangent line at the value x=3 is
    y= .
    16x-1
    f'(x)=16
    y=3x+16 (i think)
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  8. #8
    Angus is ready.... supacrazymonkey's Avatar
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    supacrazymonkey is offline
    thanks guys. I repped you already but I'll get you again when I recharge
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  9. #9
    Registered abuser. nileyk's Avatar
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    i know its already been answered but heres a pretty obvious tip, googling parts of the question with quotation marks can often help you find the answer you need.

    i googled it and found this

    http://answers.yahoo.com/question/in...1160906AAWkh3p

    which would most likely help you with part i
    Current PRs:

    * Bench - 185lbs * Squat - 225lbs * Deadlift - 245lbs * Press - 120lbs *
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  10. #10
    Registered User GolferMan's Avatar
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    Cuong got it lol
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