Which of the following functions is NOT a polynomial function? A
2y2 + 9y - 8
o
1
B
2 + 8
Ос
(x - 1)(5 – x)(x + 4)
1
OD
924 + 2z+

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.