The intensity of sound is measured on the decibel scale, dB. The equation dB = 10 log I represents the decibel level, where I is the ratio of the sound to the human hearing threshold. A noise is 150,000 times greater than the human hearing threshold. Which shows a valid step in the process of finding the decibel level of the noise? Select the correct answer below: O 150,000 = 10 log I 15,000 = log I dB = 10 log 150,000 O 10dB = log 150,000 10 = log 150,000 dB