180° < x < 270°, what is the value of tan-1(0.577)?
a
30°
b
150°
c
210°
d
330°

What does x = in this equation x+3+2x=x+5

Bring the fraction a/a-4 to a denominator of 16-a^2

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.