farmer smith has 160 feet of fencing that she is using to make a rectangular enclosure for
her chickens. she will use the side of an existing chicken coop as one side of the
enclosure and use the fencing for the other three sides.
which function gives the area a, in square feet, as a function of the length of one of the
sides perpendicular to the existing coop?
a. a(x) = x(80 - 2x)
b. a(x) = x(80 - x)
c. a(x) = x(160 - 2x)
d. a(x) = x(160 - x)

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.