Solve the problem.Suppose that the amount of oil pumped from a well decreases at the continuous rate of 
per year. When, to the nearest year, will the well's output fall to one-eighth of its present value?
A. 21 years
B. 2 years
C. 9 years
D. 14 years
Answer: D
Mathematics
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A. -6
B. -7
C. -6
D. 7
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A. 48 B. 831,600 C. 7920 D. 330
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