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Which is the 19th term in the sequence: an = -2(n - 3)?

  • math -

    a n = - 2 ( n - 3 )


    n = 19


    a 19 = - 2 ( 19 - 3 )

    a 19 = - 2 * 16

    a 19 = - 32

  • math -

    what are the first three terms of the sequence a1=2 and an=3(an-1)2

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