You have tickets for an outdoor rock concert, fourth row from the stage. However, at that distance the intensity level is \(100 \mathrm{~dB}\), too loud to be enjoyable. You decide to move to a row where the intensity level is a more moderate \(80 \mathrm{~dB}\). Fortunately, turning around and counting the right number of rows back (assuming that the distance between rows is uniform), you see that the seats you want are available.