Find the general term of the arithmetic sequence then find the indicated term of the sequence. Assume that the domain of the sequence is all natural numbers.Find an and a21.
A. an = n - 4; a21 = 17
B. an = 4 - n; a21 = -17
C. an = n + 3; a21 = 24
D. an = n + 2; a21 = 23
Answer: B
Mathematics
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