Write the expression for the general (or nth) term, an, of the geometric sequence.4, 16, 64, 256, 1024,. . .
A. an = 4 + 12(n - 1)
B. an = 4n - 1 + 3
C. an = 4n
D. an = 12n
Answer: C
Mathematics
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A. Slope 
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