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math

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the first number of a sequence is 200. every number of the sequence after the first is 100 less than twice the preceding number. what is the 5th number of the sequence

  • math - ,

    t1 = 200
    t2 = 2t1 -100 = 2(200) - 100 = 300
    t3 = 2t2 - 100 = 2(300) - 100 = 500
    t4 = ...
    ..
    t6 = 2t5 - 100 = ...

    (you should get 3300)

  • math - ,

    oops, went too far, only had to go to t5

    how about 1700 ?

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