Dawson Electronic Services had revenues of $80,000 and expenses of $50,000 for the year. Its assets at the beginning of the year were $400,000. At the end of the year assets were worth $450,000. Calculate its return on assets.

There are about 6.8 billion people in the world, and about 11.4 billion usable hectares. currently, the population of the united states has an ecological footprint of about 9.0 hectares per person. if all people in the world were to live at the level of consumption found in the united states, the population of the world would have to in order to support them.

Suppose an economy has only two sectors: goods and services. each year, goods sells 80% of its outputs to services and keeps the rest, while services sells 62% of its output to goods and retains the rest. find equilibrium prices for the annual outputs of the goods and services sectors that make each sector's income match its expenditures.

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?