In the 5th grade there are 4/5 as many students who do not where glasses as those who do where glasses if there are 60 students who where glasses how many students are in the 5th grade

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

How to do this , and can some one explain

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.