distinguish between gross domestic product and net domestic product
Net domestic product The net domestic product (NDP) equals the gross domestic product (GDP) minus depreciation on a country's capital goods.[1]
Metrication in the United States Although customary units are used more often than metric units in the U.S., the SI system is used extensively in some fields such as science, medicine, the military, automobile production and repair, and international affairs. Post 1994 federal law also mandates most packaged consumer goods be labeled in both customary and metric units.[2] Yet, most Americans are not able to make metric conversions.[3] There exist, however, conversion apps on major smartphone platforms like iOS[4] and Android[5] that can help a person make the necessary conversions.