Involves creating new systems, resources, or processes to produce new goods or services and/or serve new markets.

One investigating company tracked all credit card purchase during 2012 and measured two variables: (1) the type of credit card used (visa, mastercard, american express, or discover), and (2) the amount (in dollars) of each purchase. identify the level of each variable measured.

Don’t give me to many notifications because it will cause you to lose alot of points

In macroeconomics, to study the aggregate means to study blank