Find the first term and the common ratio of the geometric sequence.4, -0.4, 0.04, -0.004, . . .
A. a1 = -0.1, r = -0.01
B. a1 = 4, r = -0.1
C. a1 = -0.1, r = -1
D. a1 = 4, r = 0.1
Answer: B
Mathematics
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