HELP Pls :( Nantai is hiking in Death Valley. He starts out at Badwater Basin, the lowest point of DeathValley at an elevation of 282 feet below sea level. He walks northward towards Telescope Peakin the Panamints and reaches an elevation of 2400 feet. How much did his altitude change?

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.