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20 March, 17:08

Which sequence could be partially defined by the recursive formula f (n + 1) = f (n) + 2.5 for n ≥ 1?

a. 2.5, 6.25, 15.625, 39.0625, ...

b. 2.5, 5, 10, 20

c. - 10, - 7.5, - 5, - 2.5, ...

d. - 10, - 25, 62.5, 156.25

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Answers (1)
  1. 20 March, 17:28
    0
    Hello,

    Answer is C

    -10+2.5=-7.5

    -7.5+2.5=-5

    -5+2.5=-2.5

    -2.5+2.5=0
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