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Find an explicit rule for the nth term of the sequence.

-3, -15, -75, -375, ...

User Herminio
by
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1 Answer

4 votes

Answer:

  • a(n) = -3*5^(n-1)

Explanation:

Given sequence

  • -3, -15, -75, -375, ...

This is a GP with

  • The first term = -3
  • Common ratio = 5

Formula for nth term is:

  • a(n) = -3*5^(n-1)
User Alfie Hanssen
by
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