Consider the production function: Y = 6√L√K. Is this a model? O Yes, this can be used as a simple model of the production of output in an economy. O No, there are only two inputs used to produce output and real-world production functions are more complicated. O Yes, it is suitable as a microeconomic model, but it cannot be used to describe production in a macroeconomy. O No, there is no consumer and so this is not a model of anything.
