For a sound with intensity I (in watts per square meter), the loudness L(1) of the sound (in decibels) is given by the function L(1) = 10 log where I, is the intensity of a barely audible sound (about 10-12 watts per square meter). An artist in a recording studio turns up the volume of a track so that the intensity of the sound triples. A.10 log l+3 By how many decibels does the loudness increase (logarithmic value)? C. 10 log 3 B. 10 log 18 D.10 log 31

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