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13 May, 07:37

Andrea purchased 10 packs of trading cards online and received a 20% discount of each pack shipping cost 3.99 write an algebraic expression to represent the total cost of the trading cards with the shipping cost

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  1. 13 May, 09:14
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    Let x = the cost of a pack of trading cards in dollars.

    Because Andrea bought 10 packs, the cost is $10x.

    She received a 20% discount, so the cost decreased to

    0.8*$10x = $8x

    The shipping cost is $3.99.

    Answer:

    y = 8x + 3.99

    where

    x = cost of a pack of trading cards in dollars

    y = total cost wih 20% discount, including shipping
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