Find the first term, the common difference, and give a recursive formula for the arithmetic sequence.7th term is -55; 14th term is -125
A. a1 = 15, d = -10, an = an-1 - 10
B. a1 = 15, d = 10, an = an-1 + 10
C. a1 = 5, d = -10, an = an-1 - 10
D. a1 = 5, d = 10, an = an-1 + 10
Answer: C
Mathematics
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