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14 December, 15:11

The linear function c = 2 y + 29 models the average cost of a haircut in a certain city, where c, is the average price of a haircut y years after 1995. find the slope for the model. then describe what this means in terms of the rate of change in the average cost of a haircut over time

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  1. 14 December, 15:30
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    C = 2y + 29

    where

    c = the average cost of a haircut,

    y = years after 1995.

    Answer:

    The slope for the model is 2.

    It means that the average cost of a haircut increases by 2 every year after 1995

    In 1995, y=0 and the cost is 29

    In 1996, y=1 and the cost is 29+2 = 31

    In 1997, y=2 and the cost is 29+4 = 33

    and so on.
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