3friends' meals at a resuraunt cost $13 $14 and $11. use perentheses to write two diffrent expressions to show how much they spent in all. wich property does you pair of expressions demonstrate?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

What is the upper quartile in the box plot?

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.