Which equation represents a line that is perpendicular to the line represented by y =2/3x + 1?

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.

3x = 729 solve for x plz . it's urgent. will mark

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase