What are the x-intercepts of the graph of the function f(x)=x2+ 4x-12

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding 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.

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?