An economy is a method of allocating capital to meet the needs and desires of individuals. It sets out how goods and services are produced and exchanged. The economics study is called economics and an individual who studies economics is called an economist.
It was because they didn't want to pay for tax
It is absolutely ethical to charge those with lower incomes less money, and those with higher incomes more money.
Centralized decision making about what will be produced. i hope this helped and if not sorry!
Because they want different for their child. They want their child to be able to be able to hear what they can't. And enjoy the many sounds of the world. The parents already know how much they want to be able to hear, and become sad when they find out their child can't either.