What is the definition of economics by RICHARD LIPSEY?

How do you explain the concept of price elasticity in relation to a product? How many us dollars is 80.91 euros? What is the range of elasticity? What is the average cost of an acre of land in Phoenix Arizona? What is cost labor? Who had the responsibility to ensure the prosperity of the city? What does the study of economics focus on? How much does a farmer make an hour? How management is an art strugling to become science? Which is one advantage of the US maintaining good relations with other countries? How should prices be set when it is difficult to determine the actual cost of production? How does the US dollar compare to the German dollar? What is monoploy? What are the causes of retrenchment in the IT sector? What are the advantages and disadvatages of traditional commerce? Example of economic trade-off? Who decides where people will work in a centrally planned economy? Importance of agriculture? How does the circular flow of economic activity generates wealth in an economy? How are most countries have a mixed economy located on a continuum between pure market and command economy?