Can anyone help me please?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

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.