What percent of U.S. businesses have some form of remote work program?

A tax or duty charged by a government on goods moved across a border is known as a:

A) quota. B) tariff. C) subsidy. D) trade barrier.

Which of the following were designed to allow users to alert their friends of their exact whereabouts via their mobile phones?

A) virtual worlds B) geospatial platforms C) product review sites D) social networking sites E) avatars