Zippy quadcopters plans to sell a standard quadcopter (toy drone) for $ 50 and a deluxe quadcopter for $ 80. zippy purchases the standard quadcopter for $ 30 and the deluxe quadcopter for $ 50. management expects to sell two deluxe quadcopters for every three standard quadcopters. the company's monthly fixed expenses are $ 26 comma 400. how many of each type of quadcopter must zippy sell monthly to breakeven? to earn $ 15 comma 600?

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.

What are the options?

The  atomic nucleus  is the small, dense region consisting of  protons  and  neutrons  at the center of an  atom, discovered in 1911 by  ernest rutherford based on the 1909  gold foil experiment.