Find anand a6 for the following arithmetic sequence.1, 4, 7, 10, 13
A. an = 3n - 2; a6 = 16
B. an = 1(3)n-1; a6 = 243
C. an = 2n - 3; a6 = 9
D. an = n + 3; a6 = 9
Answer: A
Mathematics
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A. - 
B. 
C. 
D. - 
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