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8 September, 02:39

Which sequence matches the recursive formula?

an = 2an-1 + 5, where a1 = 5

A)

5, 10, 15, 20, ...

B)

5, 15, 35, 75, ...

C)

5, 15, 25, 35, ...

D)

5, 20, 35, 50, ...

+4
Answers (2)
  1. 8 September, 02:44
    0
    5,15,35,75 is the answer for your questio
  2. 8 September, 06:17
    0
    Hello:

    an = 2an-1 + 5, where a1 = 5

    n = 2 a2 = 2a1 + 5 = 2 (5) + 5 = 15

    n = 3 a3 = 2a2 + 5 = 2 (15) + 5 = 35

    n = 4 a4 = 2a3 + 5 = 235) + 5 = 75

    answer:

    B)

    5, 15, 35, 75, ...
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