1. The problem statement, all variables and given/known data a noisy machine in a factory produces a decibel rating of 80 dB. how manyidentical machines could you add to the factory without exceeding the 90-dB limit? 2. Relevant equations I=P/A and B+10log(I/I(sub)0) ... (I think) 3. The attempt at a solution I tried to find the intensity at 80 decibels and the intensity at 90 decibels by solving for I using B=10log(I/I0) and the inverse log equation and got 1 x 10^-4 and 1 x 10 ^-3 respectively. I had no idea where to go from here though.