Question 1 of 10 Which pair of functions are inverses of each other? O A. f(x) = y3x and g(x) = (3) O B. f(x) = 12 + 15 and g(x) = 12x – 15 c. f(x) = 11x-4 and g(x) = 14 O D. f(x) = 3-10 and g(x) = x+10

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.