The investment demand curve as a function of various possible interest rates for the entire economy is assumed to be:

The gift exchange motive suggests that

A) workers value benefits like health insurance more than job security. B) workers prefer a nice work environment, even if they must accept lower wages. C) workers who feel well treated will work harder and more efficiently. D) workers will shirk if they are paid a low wage.

Rational people having preferences for immediate benefits and delayed costs is another way of saying that:

A. money is worth less to us now than in the future. B. the value of money does not change over time. C. money is worth more to us now than in the future. D. rational people have insatiable wants.