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anonymous

  • 5 years ago

The formula for a geometric sequence is an = 2(4)^n-1. What is the 3rd term of the sequence?

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  1. amistre64
    • 5 years ago
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    when n=3 ...

  2. anonymous
    • 5 years ago
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    Answer choices are: A. 24 B. 32 C. 16 \[a _{n}\]

  3. amistre64
    • 5 years ago
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    we re starting at a1 right?

  4. amistre64
    • 5 years ago
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    1-1=0 so that would seem right to me

  5. anonymous
    • 5 years ago
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    Alright, then what would I do?

  6. amistre64
    • 5 years ago
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    \[a_3=2\ (4)^{(3-1)}\]

  7. amistre64
    • 5 years ago
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    the rest is just mathing it out

  8. amistre64
    • 5 years ago
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    4^2 = 16 times 2 is ?

  9. myininaya
    • 5 years ago
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    16+16 is?

  10. anonymous
    • 5 years ago
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    My answer would be 32 then.

  11. amistre64
    • 5 years ago
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    12+4+7+9 ... maybe lol

  12. amistre64
    • 5 years ago
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    32 is good

  13. myininaya
    • 5 years ago
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    32 is awesome

  14. amistre64
    • 5 years ago
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    32 is, is .... magnificent?

  15. myininaya
    • 5 years ago
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    yes!

  16. amistre64
    • 5 years ago
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    how do you one-up an awesome?

  17. myininaya
    • 5 years ago
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    I don't know you could say 32 is myininaya!

  18. myininaya
    • 5 years ago
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    myininaya>awesome

  19. amistre64
    • 5 years ago
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    hmmm, you do make a compelling argument ;)

  20. myininaya
    • 5 years ago
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    :)

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