Find an for the given geometric sequence.a1 = 3, r = -2
A. an = -2(3)n-1
B. an = -2(3)n
C. an = 3(-2)n
D. an = 3(-2)n-1
Answer: D
Mathematics
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A. (x + 7)(x - 9) B. (x2 - 7x)(9x - 63) C. (x - 7)(x - 9) D. (x - 7)(x + 9)
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