Find an explicit rule for the nth term of the arithmetic sequence.a16 = 21, a17 = -1
A. an = 351 - 22(n - 1)
B. an = 351 + 22(n + 1)
C. an = 351 - 22(n + 1)
D. an = 351 + 22(n - 1)
Answer: A
Mathematics
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