An audio commentary is an additional audio track, usually digital, consisting of a lecture or comments by one or more speakers, that plays in real time with a video. Commentaries can be serious or entertaining in nature, and can add information which otherwise would not be disclosed to audience members.[1]
In accounting terms, operating expenses, or OE, and cost of goods sold, or COGS, are both considered expense accounts. In short, they measure different ways in which resources are spent in the process of running a business.
selling expenses is a mixed costs. it is a mixture of both fixed and variable components. for example, in selling expenses in a retail shop; fixed costs are the employees saâ¦lary. while variable cost will be their commission or bonus of the sale.