Determine the possible total noise level from running several machines (with a known noise output) simultaneously.
Determine the resultant noise level if a new machine is added to an existing noisy area.
Determine the effect that background noise levels will have on the overall noise level.
Addition of Decibels (dB) is not a simple task given that the Decibel scale is logarithmic. Calculate the added resultant noise level expected by providing a number of noise levels.