Recall the Application about the response of bike messengers in Zurich to a change in wages to answer the following question(s).Recall the Application. A study of the messengers in Zurich showed that as the messengers' revenue share increased from 40% to 50%, the bike messengers took more shifts but pedaled slower. If the increase in the revenue is similar to a wage increase, then the increase in the shifts taken is reflective of:
A. the income effect.
B. the substitution effect.
C. neither the income nor the substitution effect.
D. both the income and the substitution effect.
Answer: B
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Use the figure below to answer the following question. 
Assume that price increases from $2 to $10. The price elasticity of supply (based on the midpoint formula) associated with this price change is about
A. 0.25 and supply is inelastic. B. 1 and supply is unit-elastic. C. 1.35 and supply is elastic. D. 4 and supply is elastic.
If there are no changes in inflation expectations, a fall in the federal funds rate:
A) increases both the long-run nominal interest rate and the long-run expected interest rate. B) decreases the long-run nominal interest rate and increases the long-run expected interest rate. C) decreases both the long-run nominal interest rate and the long-run expected interest rate. D) increases the long-run nominal interest rate and decreases the long-run expected interest rate.
According to the equation of exchange, the money supply times the velocity of money equals the
A) price level. B) growth rate of the money supply. C) real GDP. D) nominal GDP.
If a binding price floor were placed in the market in the graph shown:
A. quantity demanded would exceed quantity supplied.
B. quantity supplied would exceed quantity demanded.
C. the demand curve would have to shift.
D. the supply curve would have to shift.