2017 April(74F) Math Question 42

Logarithms

- Logarithm Expressions

42. The number of decibels, d, produced by an audio source can be modeled by the equation d = 10 log(7), where I is the sound intensity of the audio source and K is a constant. How many decibels are produced by an audio source whose sound intensity is 1,000 times the value of K ?

Choice G

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