Question #6415846Single Choice

Algebra-2

Question

Sound Intensity: The intensity ( I ) (in decibels) of sound varies directly as the cube of the distance ( d ) (in meters) from the source. If the sound intensity is 70 dB at 2 meters, what will it be at 4 meters?

Options

A
    560 dB  
B
    568 dB  
C
    572 dB  
D
    574 dB  

Answer & Analysis