How many different user ID's can be formed from the letters W, X, Y, Z if no repetition of letters is allowed?

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.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test

Calculate the annual effective interest rate of a 12 % nominal annual interest rate compound monthly