SOLUTION: I have a problem with sequence and series and I do not understand how to solve it. The questions is -6, 18, -54

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Question 248800: I have a problem with sequence and series and I do not understand how to solve it. The questions is -6, 18, -54
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
18/-6 = -3
-54/18= -3
r=-3
This is a geometric sequence.
The next number in the sequence is -54*-3=162
.
Ed