Question

Writeanequationtodescribethesequencebelow.Usentorepresentthepositionofaterminthesequence,wheren = 1forthefirstterm.

7 , –21 , 63 , ...

Write your answer using decimals and integers.

an =
(
)n - 1

Answer 1

[AI-generated answer — Bot GPT 3.5]

a_n = 7(-3)^{n-1}