1. Determinants shift demand, but only one variable shifts the Qd. That variable is a:

A) change in income.
B) change in price.
C) change in the number of consumers.
D) change in technology
E) change in input costs.

2. If Qd goes up, what has happened to P and Q? If Qd goes down, what has happened to P and Q?

A) P (up), Q (down) ; P (down), Q (down)
B) P (down), Q (up) ; P (up), Q (down)
C) P (up), Q (up) ; P (down), Q (up)
D) P (up), Q (up) ; P (up), Q (up)
E) P (down), Q (down) ; P (up), Q (up)

3. One reason for the Qd to decrease in a perfectly competitive market is due to:

A) an increase in quantity supplied.
B) a decrease in quantity supplied.
C) an increase in supply.
D) a decrease in supply.
E) a decrease in demand.