Tiana's car travel 111 miles on 3/8 a tank of gas how far will she be able to go on a full tank of gas

Pls , the question is in the picture!

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.

What multiplys to be 1 but adds up to be 4