Installing an air purifier or a water filtration system is an example of a(n)
a. direct estimation method
b. ozone-reducing policy
c. physical linkage approach
d. averting action
d. averting action
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Based on the figure below. Starting from long-run equilibrium at point C, an increase in government spending that increases aggregate demand from AD to AD1 will lead to a short-run equilibrium at point ________ creating _____gap. 
A. D; an expansionary B. B; no output C. B; expansionary D. A; a recessionary
Refer to Figure 9.1. If the market is in equilibrium, the producer surplus earned by the seller of the 1st unit is ________
A) $5.00 B) $10.00 C) $15.00 D) $20.00 E) $40.00
In 2010 the U.S. economy's inflation rate was higher than its unemployment rate
a. True b. False Indicate whether the statement is true or false
Which has greater elasticity: a supply curve that goes through the origin with slope of 1 or a supply curve that goes through the origin with slope of 4?
A. The supply curve with slope of 4. Slope and elasticity are directly related so the higher the slope, the higher the elasticity. B. They both have the same elasticity. Any supply curve with a positive slope has the same elasticity. C. They both have the same elasticity. Any supply curve that goes through the origin has an elasticity of 1. D. The supply curve with slope of 1. Slope and elasticity are inversely related so the lower the slope, the higher the elasticity.