Write 9.3 x 10^3 in standard form

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.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)