What happens to the price of a product is tastes change and sales go down?

What does the process of writing a business plan force and entrepreneur to do? How does a change in price affect consumer behavior in terms of income vs substitution effect? What is Opportunity loss or regret is associated with? How money has evolved? Explain collusive oligopoly with example? The purchase and use of goods and services to impress others is called? How could one define operational efficiency? How much is 10000 dollars in pecos? How much is 50 cincuenta sucres in us dollars? Explain briefly what is demand and supply curve? Economic and political philosiphy that favors public or social instead of private control of property and income? Which type of business is predicted to dominate the us economy in the future? Does fire have a stimulus? What would be a noneconomic cost of a governments decision to build a new high way? What does the term exworks mean? What is the value of a 2004 diez pesos coin worth? Which tends to result in a decrease in the selling price of houses in an area? How much does Coco Chanel make in a year? When determining the rewards of factors of production? Customary unit of weight abbreviated pound?