Aspeedboat is considered to be a normal good and a luxury good. therefore, we would expect the income elasticity of demand to be:

Speedboat is considered to be a luxury good. Income elasticity is considered to be positive with the level of income which means if the income level is higher then the demand for luxury goods will also be higher. In this case, as the income increases, the demand of speedboat will be increased. Hence, speedboat has a positive relation with income elasticity of demand.

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.