In the short run, the marginal cost of the first unit of output is $20, the marginal cost of producing the second unit of output is $16, and the marginal cost of producing the third unit of output is $12. the firm's total variable cost of producing three units of output is:

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right

What could cause a production possibilities curve to move down and to the left? a.) a nation loses land after being defeated in a war. b.) an increase in the use of computer technology speeds up production c.) a baby boom 20 years ago results in a large number of young adults in the population today. d.) thousands of investors from overseas invest money in a nations economy.

Which of the following best explains the purpose of a supply schedule? a. to calculate how much time it takes for distribution. b. to indicate how supply and demand relate to price. c. to show the relationship between quantity supplied and prices. d. to demonstrate how the supply decreases as price increases.