Sometimes external forces in the economy throw the supply and demand for a product or service out of whack. Trade quotas are a common and powerful example of one such external force. One way ...

According to the National Association of Manufacturers, manufacturers contributed $1.87 trillion to the United States economy in 2012, an increase from the $1.73 trillion contributed in 2011.

Notice that in the formula, we use the term average subscribers, as the actual number of subscribers can change constantly. So to come up with an accurate calculation, companies need to calculate (or ...