Atriangle has sides that measure 4 units, 6 units, and 7.21 units. what is the area of a circle with a circumference that equals the perimeter of the triangle?
a. 17 units^2
b. 24 units^2
c. 54 units^2
d. 94 units^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.

Using elimination, what is -4x+2y=-12 4x+8y=-24

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)