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11 July, 18:20

Solve the equation. show all work

18^ (r-10) = 93

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  1. 11 July, 18:54
    0
    Recall the logarithm rules:

    a^y = x is the same as log_a x = y

    In this case,

    a = 18

    y = r - 10

    x = 93

    So,

    18^ (r-10) = 93

    is the same as

    log_18 93 = r - 10

    Solve for r to get:

    10 + log_18 93 = r
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