Which of the following is a geometric sequence?
r =
3
a =

8
r =
1/2
a =

4
r =
-4
Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?
Which of the following is a geometric sequence?
a =

1
Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?
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