Are The boundary equations of the system of linear inequalities. x+y< 1
2x+ y 2
x + y =1
2x - y =1
A
B
x + y = 1
2x + y = -2
С
X-y=1
2x -y = 1
D
x - y =1
2x + y = -2

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.