The decibel, a measure of loudness, is related to the relative intensity of sound by the formula
Decibels 
(Relative intensity).
A whisper in a library is about 34 decibels. What decibel level is produced by 12 people whispering in the library? Round your answer to the nearest whole number.
?
A. 408 decibels
B. 45 decibels
C. 410 decibels
D. 47 decibels
Answer: B
Mathematics
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A. 
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D. 
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