Write an equation that models the sequence 6, 12, 24, 48...

  A) y = 6x  
  B) y = 2x  
  C) y = 6x2  
  D) y = 6(2x-1)
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1 Answer

Divide each term by 6: 1, 2, 4, 8...

The sequence is powers of 2 starting at zero.

2^x for x≥0 generates each term of the reduced series, so the given series would be 6(2^x).

If x starts at 1 instead of zero, the series is generated by 6(2^(x-1)) or 6(2ˣ⁻¹) which looks like answer D.


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