The interpretation of the slope coefficient in the model ln(Yi) = ?0 + ?1Xi + ui is as follows:
A) a 1% change in X is associated with a ?1 % change in Y.
B) a change in X by one unit is associated with a ?1 change in Y.
C) a change in X by one unit is associated with a 100 ?1 % change in Y.
D) a 1% change in X is associated with a change in Y of 0.01 ?1.
Answer: C) a change in X by one unit is associated with a 100 ?1 % change in Y.
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Based on the figure below. Starting from long-run equilibrium at point C, a tax cut that increases aggregate demand from AD to AD1 will lead to a short-run equilibrium at point ________ and eventually to a long-run equilibrium at point ________, if left to self-correcting tendencies. 
A. D; C B. B; C C. B; A D. D; B
Social Security is an earmarked tax
a. True b. False
Refer to Figure 5-3. Which demand curve is unit elastic?
a. A
b. B
c. D
D. None of the above
In Figure 26.1, producer surplus under monopoly is 
A. P2AC. B. EBC. C. FP2C. D. FP1BE.