An acoustic guitar played in a certain venue produces a sound intensity of 65 dB.

Question

 When it is plugged in, it produces 82.5dB.

 

a) The plugged in sound intensity is how many times the previous (unplugged) intensity? Round your answer to the nearest integer.

 

b) How many times louder does the guitar sound to the audience when plugged in compared with when it is not plugged in? Round your answer to the nearest 0.1

Answer 1

You have so MANY questions.  Why don't you just take the time to learn the material, and figure it out yourself?

Answer 2

For part (a), we can model the equation to 82.5 = 65x where x is the number of times along with the previous (unplugged) intensity. Therefore, we isolate x by dividing 65 to both sides in order to get x to be approximately 1.27 and rounding to the nearest integer will get x=1.