Help please. I need help proving the statement and reason.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

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.