Find the First Term, the Common Difference, and Give a Recursive

question 89

Multiple Choice

Find the first term, the common difference, and give a recursive formula for the arithmetic sequence.
-7th term is -2; 15th term is -18

• A) a1 = 12, d = -2, a_n = a_n- 1 - 2
• B) a1 = 12, d = 2, a_n = a_n- 1 + 2
• C) a1 = 10, d = 2, a_n = a_n- 1 + 2
• D) a1 = 10, d = -2, a_n = a_n- 1 - 2

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