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20 October, 02:01

Gina paints beach scenes on notecards. She sells packages of 8 notecards for $8 for one package, $16 for 2 packages, and $24 for 3 packages. Which equation is the rule for the pattern if n is the number of packages and d is the selling price in dollars?

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  1. 20 October, 02:18
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    In this question, each package has 8 notecards.

    one notecard costs $8

    2 notecards cost $16

    3 notecards cost $24

    if n - number of packages

    d - selling price in dollars

    We can see that with each additional notecard bought the cost increases by $8

    therefore there's a proportional relationship between n and d

    As n increases, d increases by the same amount.

    if we put it in an equation,

    d = 8*n

    n - 1 package and d is 8

    if n - 2

    d = 8*2

    d = 16

    Therefore we can use the following equation;

    d=8n
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