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17 November, 03:19

Brian buys 6 books and the total cost is $24.18. What is the constant of proportionality that relates the cost in dollars, y, to the number of books, x?

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  1. 17 November, 03:45
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    4.03

    Step-by-step explanation:

    Y = kx

    y = 24.18

    x = 6

    k = constant of proportionality

    Y = kx

    Step 1. Substitute number based on the formula

    24.18 = k6

    Step 2. Transpose Y to the left to find the ratio of constant proportionality

    K = 24.18/6

    Step 3. Divide Y over X

    K = 4.03 (answer)
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