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Find a Formula for A_n for the Arithmetic Sequence $a _ { 3 } = 0 , a _ { 9 } = - 12$

Question 11

Multiple Choice

Find a formula for a_n for the arithmetic sequence. $a _ { 3 } = 0 , a _ { 9 } = - 12$

A) a_n = 4 - 2n
B) a_n = -6 + 4n
C) a_n = - 2 + 4n
D) a_n = 6 - 2n
E) a_n = 4n

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