In the figure, AABC is congruent to AADC. If the square ABCD is dilated by a factor of 2 to form ASCD, what is the ratio of the area of A'B'CD'to the area of ABCD?
OA 2:1
ОВ.
3:1
OC 4:1
OD. 5:1

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.