If f(x)= 4-2x^2 and g(x) = 6x, which expression is equivalent to (g-f)(3)

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Me n o w. i need t h i s. 10 points

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.