L = loudness, in decibels (dB); I = sound intensity, in watts/m2; I0 = 10−12 watts/m2 The loudness of a jack hammer is 96 dB. Its sound intensity is about
.
The loudness of a compactor is 94 dB. Its sound intensity is about
.

i think it's b

step-by-step explanation:

because the graph is 2 above (0,0)

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step-by-step explanation:

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it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540