PLEASE HEL OVERR DUEEE What does it mean when the circle on an inequality graph is open?
A. The number is included
B. The number is not included
C. The number is equal to
D. The number is greater than

What is the solution to the equation 9^(x+1) =27

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

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.