4 friends want to go in on the purchase of a pack of earrings. The pack costs $52.54. Each person will pay $13.56. Which expression should be used to find out how much each person will pay?
O 13.560 = 4
O 13.560 = 52.54
O 4C = 52.54
O 13.560 = 52.54

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.