Evaluate the expression without using a calculator.log12
A. 
B. 1
C. 
D. 12
Answer: C
Mathematics
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A. 69,564 B. 35,904 C. 17,952 D. 34,782
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mcg
A. 2100 B. 21,000 C. 0.021 D. 0.21
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Solve.The difference of four times a number and seven times the same number is 9. Find the number.
A. 3 B. 4 C. -3 D. -4
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