Jolene invests her savings in two bank accounts, one paying 4 percent and the other paying 11 percent simple interest per year. she puts twice as much in the lower-yielding account because it is less risky. her annual interest is 4408 dollars. how much did she invest at each rate?  

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.