There are 278 houses in hannah's neighborhood. she collected a total of $780 from her neighbors to donate for a local charity. hannah received $5 at each house she went to. from how many houses did hannah not collect money from? explain the answer and show your work

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.