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The total sales made by a salesperson was $25,000 after 3 months and $68,000 after 23 months. Predict the total sales after 42 months.

  • math - ,

    Are we assuming that the relation is linear ?
    Then treat the data as two ordered pairs
    (3,25000) and (23,68000)
    slope = (68000-25000)/(23-3) = 43000/20 = 2150

    using the y=mx+b equation for a straight line

    sales = 2150month + b
    sub in 3,25000)
    25000 = 2150(3) + b
    b = 18550

    sales = 2150month +18550
    so if month = 24
    sales = ......

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