Solve the equation by completing the square.

0 = 4x2  − 64x + 192

a. 

x  = 4, 12

b. 

x  = -8, 24

c. 

x  = -12, -4

d. 

x  = -24, 8

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.

Finding tbe values of the variables in each kite

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25