How is standard of living a sign of economic performance?

answer:

a standard of living is the level of wealth, comfort, material goods, and necessities available to a certain socioeconomic class or a certain geographic area. the standard of living includes basic material factors such as income, gross domestic product (gdp), life expectancy, and economic opportunity.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

c. businesses/firms & government