________ is the property of an entity whose individual units are interchangeable.

To graph a relationship among several variables, we hold all but ________ variable(s) constant and use the ________ assumption

A) one; scarcity B) two; ceteris paribus C) three; scarcity D) one; ceteris paribus E) one; absence of trend

Refer to Scenario 17.2. An employer who only wants to hire those people who find learning less costly can do so by choosing y* to be anywhere between

A) 15 and 45. B) 15 and 30. C) 13 1/3 and 30. D) 8 and 20. E) none of the above