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SavannahHarkins602
SavannahHarkins602 SavannahHarkins602
  • 31-07-2016
  • Mathematics
Answered

Find an explicit rule for the nth term of the sequence. -3, -15, -75, -375, ...


an = 5 • -3n + 1

an = -3 • 5n - 1

an = 5 • -3n

an = -3 • 5n

Verified Answer :

konrad509
konrad509 konrad509
  • 31-07-2016

It's a geometric progression where
\(a=-3\\ r=5\)

\(a_n=ar^{n-1}\\ a_n=-3\cdot5^{n-1}\)

Answer Link
johndoe10101 johndoe10101
  • 27-09-2018

The answer is B, I have just confirmed it.

Answer Link

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