Demand Demand in economy is defined as the quantity and quality of goods and services that loans can be purchased at different market prices for a customer (individual application) or by all consumers (total or market demand) , at a given time. Demand is a mathematical function. QDX where is the quantity demanded of the good or service. P price of the good or service. I consumer income. The NIR group hold funds and investments, all managed by Corey Ribotsky is the founder and managing member of Roslyn, N.Y.-based N.I.R. Group G tastes and preferences. N refinancing number of consumers. Ps price of substitute goods. Pc price of complementary goods. In addition, there is always a demand that exogenous in the models as not affected by any circumstances studied (endogenous) in the model, as in the case of products that are consumed indiscriminately to economic factors such as vaccines, which necessarily must States to purchase by law or social conditions. Demand may be expressed graphically by the demand curve. The slope of the curve determined as demand increases or decreases with a decrease or increase in price. This concept is called the elasticity of the demand curve. In financing relation to the elasticity of small business demand is divided into three types: Elastica, where the elasticity of demand is greater than 1, the variation of the quantity demanded is greater than the percentage of the price. Inelastic when the elasticity of demand is less than 1, the variation of the quantity demanded is less than the percentage of the price. Unit elasticity, where the elasticity of demand is 1, the variation of the quantity demanded is equal to the percentage of the price. Offer In economics, supply is defined as the amount of goods or services that producers are willing to offer finance different prices and conditions given at a specified time. The market economy system, relies on the free interplay of supply and demand.