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24 January, 06:44

A store sells new DVDs for $12 each. used DVDs sell for $7 each. Joseph is buying two new DVDs and X used DVDs. write an equation that can be used to find X, the total Joseph must pay in dollars

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  1. 24 January, 07:11
    0
    Used DVDs = x

    Total = t

    t = 12 (2) + 7x

    t = 24 + 7x

    t - 24 = 7x

    (t - 24) / (7) = x

    If given the total, you can plug it in to variable t and then work the right side of the equation to isolate variable x and solve to find its value.
  2. 24 January, 08:19
    0
    Given that new DVDs are selling for $12 and used for $7, then Joseph is buying:

    12·2 + 7x =
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