A home goods store purchased a desk lamp and marked it up 155% from the original cost of $9.12. Then, wanting to make room for summer inventory, the store placed the desk lamp on sale for 30% off. What was the price after the discount?

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.