Biana uses an angle measuring device on a 3-foot tripod to find the height, h, of a weather balloon above ground level, as shown in this diagram. the balloon is at a 40o angle of elevation. a radio signal from the balloon tells bianca that the distance between the tripod and the balloon is 25,000 feet. find the height, h, of the balloon above ground level?

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.