Serena estimate that she can paint 60 square feet of wall space every half-hour. Write an equation for the relationship with time in hours as the independent variable. Can Serena paint 400 square feet of wall space in 3.5 hour? Why or why not?

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.