Aset has 225 proper subsets, how many elements does it have?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

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.

Solve the equation. 2x - 8(x+1)= 6(2x - 3)