***ECONOMICS***Income tax is money that has to be paid to the government based on: A. the amount of money a person earns.

B. the value of a person's home or land.

C. the cost of a product being purchased.

D. the number of cars a person owns.

States that if there is no specific employment contract saying otherwise, the employer or employee may end an employment relationship at any time, regardless of cause. rule of fair treatment due-process policy rule of law employment flexibility employment at will

Large public water and sewer companies often become monopolies because they benefit from although the company faces high start-up costs, the firm experiences average production costs as it expands and adds more customers. smaller competitors would experience average costs and would be less

Industrial engineers who specialize in ergonomics are concerned with designing workspace and devices operated by workers so as to achieve high productivity and comfort. a paper published in this research area reports on a study of preferred height for an experimental keyboard with large forearm-wrist support. a sample of 31 trained typists resulted in an average preferred height of 80.0 cm