Find the common difference d and the nth term an of the arithmetic sequence with the specified terms. 3rd term is 13; 8th term is 33
A. d = 4; an = 4n + 5
B. d = 8; an = 8n + 9
C. d = 5; an = 5n + 4
D. d = 4; an = 4n + 1
Answer: D
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