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25 June, 17:10

A local newspaper charges $18 for the first 3 lines of a want ad, and then $6.50 for each additional line. Express the cost of an x-line ad, c (x), as a piecewise function. unit 5 financial algebra

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  1. 25 June, 18:40
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    c (x) =

    18x for x≤3 54 + 6.5 (x - 3) for x >3

    Step-by-step explanation:

    Charges are : -

    $ 18 for the first three lines of the add and $6.50 for each additional line

    Thus,

    for x ≤ 3, cost will be c (x) = 18x

    and if x > 3, cost for the first 3 lines will be 18*3 = 54 dollars and then cost will increase by $6.50 for each additional line.

    Thus c (x) = 54 + 6.5 (x - 3)

    So, the piecewise defined function c (x) can be represented by : -

    c (x) =

    18x for x≤3 54 + 6.5 (x - 3) for x >3
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