What do -2(3x-10y+8) equals

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

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.