When money is used to express the market value of goods and services it is functioning as a: ?

When money is used to express the market value of goods and services it is functioning as a? Unit of account. A unit of account is defined as the nominal monetary unit of measure for a currency in economics. This measure measures the real value or cost of an economic item such as goods, services, liabilities, assets, income and expenses. 

Two trends that i’ve noticed are the following: lifestyle trend of many people seeking fitnessgenerates a business opportunity of opening a gym. another trend is entertainment; popmusic is very popular which generates a business opportunity for record producers lookingto produce music that will sell