Question

What is the explicit formula for this geometric sequence -6,-18,-54,-162,…

Answer 1

Answer: an= -6(3)^(n-1)

(B)

Step by step explanation: a1 is -6 and a2 is -18, only B would match the sequence. The only other answer that comes close is -6(-3)^(n-1) but if you multiply -6 by -3 you get 18 instead of -18