Find an expression for the nth term of the arithmetic sequence.-1, -5, -9, -13, -17, . . .
A. an = -4n + 3
B. an = -4n - 3
C. an = -7 - 4n
D. an = 4n - 3
Answer: A
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A. 
B. - 
C. - 
D. 
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