Find the common difference d and the nth term an of the arithmetic sequence with the specified terms. 5th term is -22; 12th term is -78
A. d = -2; an = -2n + 18
B. d = -8; an = -8n - 10
C. d = -8; an = -8n + 18
D. d = -2; an = -2n - 8
Answer: C
Mathematics
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