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OpenStudy (anonymous):
Which of the following is the formula for the geometric sequence? 320, 80, 20, 5,... A. an = 320(1/4)n-1 B. an = 320(4)n-1 C. an = 4(320)n-1
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OpenStudy (anonymous):
first term is 320. common ratio is 1/4
OpenStudy (anonymous):
So the answer is A
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