A recording engineer works in a soundproofed room that is 45.0 dB quieter than the outside. If the sound intensity in the room is 1.30e-10 W/(m^2), what is the intensity outside? I know this intensity formula ... ... I = (P/A) OR I = ( P / [(4)(pi)(r^2)] ) ... and for dB ... ... beta = (10 dB)(log (I/Io) ... I can't make sense of the 2 equations to know what to do next ... any ideas?