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5 August, 11:25

Th

Write an explicit formula for An, the nth

term of the sequence 15, 23, 31, ...

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  1. 5 August, 11:32
    0
    a₁ = 15 and common difference = 8 so the formula is:

    aₙ = 15 + (n - 1) * 8

    = 8n + 7
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