Find the first term and the common difference of the arithmetic sequence described. Give a formula for the nth term of the sequence.4th term is 3; 6th term is 9
A. a = -3; d = 3; an = 3n - 6
B. a = 6; d = -3; an = 3n + 9
C. a = -3; d = 3; an = -6n + 3
D. a = -6; d = 3; an = 3n - 9
Answer: D
Mathematics
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