Find the slope of the equation: y = 2x + 5 I know its easy but I just need the answer so I can answer every other question.

The circumference of a circle is 5 pi cm. what is the area of the circle?

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.

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6