2. What is the difference between 25°c and _4°c? Choose one answer a 25-(-4) b.25-4. c.-4+(+25). 25+(-4) ​

Need on this one asap im almost done with this subject

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.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.