Ahmed runs a baked potato stall at the market. he makes a profit of 40c on each potato he sells but he has to pay $50 each day for the stall. write down a formula for the amount of money, in dollars, ahmed makes on one day if he sells x potatoes.

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.