Tiana can clear a football field of debris in 3 hours. jacob can clear the same field in 2 hours. if they decide to clear the field together, how long will it take them?

50 minutes
1 hour 5 minutes
1 hour 12 minutes
5 hours

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.