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20 September, 23:42

Use the explicit formula an = a1 + (n - 1) • d to find the 250th term of the sequence below.

57, 66, 75, 84, 93, ...

A. 2334

B. 2307

C. 2241

D. 2298

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  1. 20 September, 23:43
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    For this case we have the following equation:

    an = a1 + (n - 1) • d

    Where,

    a1 = 57

    d = 66-57 = 9

    For the term number 250 we have:

    n = 250

    Substituting the values:

    a250 = 57 + (250 - 1) * 9

    a250 = 2298

    Answer:

    D. 2298
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