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March 25, 2017

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You are a manufacturer of a certain item. You’ve calculated that you can sell 80 of these items for $5 each and you can sell 60 of these items for $8 each.
Assuming this relationship is linear, write an equation that relates cost to the number of watches you make

  • math - ,

    Let p be the price, and N be the sales

    If there's a linear relationship,
    N = mp + b

    Now plug in what you know:

    80 = 5m + b
    60 = 8m + b

    20 = -3m
    m = -20/3
    b = 340/3

    so,

    3N = -20p + 340

  • math - ,

    P=200$Q=85

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