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21 September, 02:05

The party store has a special on greetings cards. It charges $14 for 4 greeting cards and $1.50 for each additional card. Write an equation for the total cost of greeting cards in terms of the number of cards. Define your variables. What is the total cost of 9 greeting cards?

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  1. 21 September, 02:07
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    C=14 + 1.5 (x-4)

    c = total cost

    x = number of cards

    cost for 9 cards:

    x=9

    c=14+1.5 (9-4)

    14+1.5 (5) = 21.50

    total cost = $21.50
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