Solve the problem.James doubled his profit compared with that of last year. Last year he doubled his profit from the previous year. If his profit this year was $12,000, then what was his profit last year and the year before that?
A. $9000; $3000
B. $3000; $1500
C. $9000; $6000
D. $6000; $3000
Answer: D
Mathematics
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, 
, 
, 
, 18
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A. 
B. 
C. 
D. 
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x
A. -12;
B. 6;
C. -2;
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