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23 April, 07:26

Which best describes the rule for this pattern? 1,-12,12,-1 A.) subtract 13, then add 24 B.) subtract - 13, then add 24 C.) subtract - 24, then add 13 D.) subtract 24, then add 13

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  1. 23 April, 07:32
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    In this exercise we have the following pattern:

    1, - 12, 12, - 1

    So we need to find the rule for this patter. First of all, let's take the first number, which is 1:

    1

    To find the second number, which is - 12, we must subtract 13, because:

    1 - 13 = - 12

    To find the third number, which is 12, we must add 24, because:

    -12 + 24 = 12

    In conclusion, the correct answer is A.) subtract 13, then add 24
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