Find the nth term {an} of the geometric sequence. When given, r is the common ratio.3, 
, 
, 
, 
, ...
A. an = 3 ? 
n-1
B. an = 3 ? 
n
C. an = 3 ? 
n + 1
D. an = 3 ? 
n-1
Answer: D
Mathematics
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