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I need help with this, please! A speaker is talking at a distance of 3.0 m from where you are and you measure the sound

I need help with this, please!

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A speaker is talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1x10-7 W/m2. a) Another student is 4.0 m away from the speaker. What sound intensity does the other student measure? b) What is the sound intensity level in decibel for an intensity of 1.1x10-W/m-? (Lowest detectable intensity for human lo=10-12w/m?)

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