Write the expression for the general (or nth) term, an, of the geometric sequence.
, 
, 1, 2,. . .
A. an = 
(2)n - 1
B. an = 
+ 2(n - 1)
C. an = (
)n - 1 + 
D. an = 
+ 
n - 1
Answer: A
Mathematics
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