Macroeconomics
13th Edition
ISBN: 9781337617390
Author: Roger A. Arnold
Publisher: Cengage Learning
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Chapter 9, Problem 15QP
To determine
Explain the price level of long-run equilibrium and short-run equilibrium.
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The graphs illustrate an initial equilibrium for the economy. Suppose that the government increases spending.
Use the graphs to show the new positions of aggregate demand (AD), short‑run aggregate supply (SRAS), and long‑run aggregate supply (LRAS) in both the short run and the long run, as well as the short‑run and long‑run equilibriums resulting from this change. Then, indicate what happens to the price level and real GDP (or aggregate output) in the short run and in the long run. Adjust the graph.
explain the second image as well and which is right.
The following graph plots aggregate demand (AD2027AD2027) and aggregate supply (AS) for the imaginary country of Cotopaxi in the year 2027.
Suppose the natural level of output in this economy is $6 trillion.
On the following graph, use the green line (triangle symbol) to plot the long-run aggregate supply (LRAS) curve for this economy.
Economists forecast that if the government takes no action and the economy continues to grow at the current rate, aggregate demand in 2028 will be given by the curve labeled ADAADA, resulting in the outcome given by point A. If, however, the government pursues an expansionary policy, aggregate demand in 2028 will be given by the curve labeled ADBADB, resulting in the outcome given by point B.
The following table presents projections for the unemployment rates that would occur at point A and point B. Consider the potential rate of inflation between 2027 and 2028, depending on whether the economy moves from the initial price level of 102 to the…
Suppose the economy is operating at potential GDP when it experiences an increase in export demand. How might the economy increase production of exports to meet this demand, given that the economy is already at full employment?
Chapter 9 Solutions
Macroeconomics
Ch. 9.1 - Prob. 1STCh. 9.1 - Prob. 2STCh. 9.1 - Prob. 3STCh. 9.2 - Prob. 1STCh. 9.2 - Prob. 2STCh. 9.2 - Prob. 3STCh. 9.3 - Prob. 1STCh. 9.3 - Prob. 2STCh. 9.3 - Prob. 3STCh. 9 - Prob. 1QP
Ch. 9 - Prob. 2QPCh. 9 - Prob. 3QPCh. 9 - Prob. 4QPCh. 9 - Prob. 5QPCh. 9 - Prob. 6QPCh. 9 - Prob. 7QPCh. 9 - Prob. 8QPCh. 9 - Prob. 9QPCh. 9 - Prob. 10QPCh. 9 - Prob. 11QPCh. 9 - Prob. 12QPCh. 9 - Prob. 13QPCh. 9 - Prob. 14QPCh. 9 - Prob. 15QPCh. 9 - Prob. 16QPCh. 9 - Prob. 17QPCh. 9 - Prob. 18QPCh. 9 - Prob. 1WNGCh. 9 - Prob. 2WNGCh. 9 - Prob. 3WNGCh. 9 - Prob. 4WNGCh. 9 - Prob. 5WNGCh. 9 - Prob. 6WNGCh. 9 - Prob. 7WNG
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- Suppose that the macroeconomic equilibrium is determined in the closed economy (AE = C+I +G). Show and explain the effects of an increase in the marginal tax rate (t) on macroeconomic equilibrium.arrow_forwardRefer to the data in the table below. Suppose that the present equilibrium price level and level of real GDP are 100 and $255, and that data set B represents the relevant aggregate supply schedule for the economy. Price Level 110 100 95 90 (A) $ Real GDP 280 255 230 205 Price Level 100 100 100 100 (B) Real GDP 205 230 255 280 Price Level 110 100 95 90 (C) Real GDP 230 230 230 230 Instructions: Enter your answers as a whole number. a. What must be the current amount of real output demanded at the 100 price level? $ b. If the amount of output demanded declines by $25 at the 100 price level shown in B, what would be the new equilibrium real GDP? In business cycle terminology, economists would likely call this change in real GDP (Click to select) ✓arrow_forwardThe task I am struggling with: The economy is in short-run macroeconomic equilibrium at point E1 in the accompanying diagram (see the picture). Based on the diagram, answer the following questions. a) Is the economy facing an inflationary or recessionary gap? b) What policies can the government implement that might bring the economy back to long-run macroeconomic equilibrium? Illustrate with a diagram. c) If the government did not intervene to close this gap, would the economy return to long-run macroeconomic equilibrium? Explain and illustrate with a diagram.Thank you very much for your help.arrow_forward
- The following graph shows the aggregate demand (AD) curve in a hypothetical economy. At point A, the price level is 140, and the quantity of output demanded is $300 billion. Moving down along the aggregate demand curve from point A to point B, the price level falls to 120, and the quantity of output demanded rises to $500 billion. 170 100 180 140 130 120 110 AD 100 00 100 200 300 400 B00 700 OUTPUT (Billians of dollars) As the price level falls, the cost of borrowing money will , causing the quantity of output demanded to Additionally, as the price level falls, the impact on the domestic interest rate will cause the real value of the dollar to in foreign exchange markets. The number of domestic products purchased by foreigners (exports) will therefore and the number of foreign products purchased by domestic consumers and firms (imports) will Net exports will therefore causing the quantity of domestic output demanded toarrow_forwardIf households decide to save a larger portion of their income, what effect would this have on the output, employment, and price level in the short run? What about the long run?arrow_forwardIn long-run macroeconomic equilibrium, aggregate quantity demanded equals aggregate quantity supplied equals potential GDP. Select one: True Falsearrow_forward
- The following graph shows the aggregate demand (AD) curve in a hypothetical economy. At point A, the price level is 140, and the quantity of output demanded is $300 billion. Moving down along the aggregate demand curve from point A to point B, the price level falls to 120, and the quantity of output demanded rises to $500 billion. 170 160 150 140 130 120 110 AD 100 90 100 200 300 400 500 600 700 800 OUTPUT (Billions of dollars) PRICE LEVELarrow_forwardThe graphs illustrate an initial equilibrium for the economy. Suppose that the government increases taxes. Use the graphs to show the new positions of aggregate demand (AD), short-run aggregate supply (SRAS), and long-run aggregate supply (LRAS) in both the short run and the long run, as well as the short-run and long-run equilibriums resulting from this change. Then, indicate what happens to the price level and GDP in the short run and in the long run. Aggregate price level Short-run graph LRAS SRAS Short-run equilibrium Real GDP AD Aggregate price level Long-run graph LRAS Long-run equilibrium Real GDP AD SRAS gatearrow_forwardIs a change in business investment a determinant of aggregate demand or aggregate supply? What happens to the equilibrium Real GDP and price level when business investment decreases? Would this cause a recession or inflation? Is a change in consumer spending a determinant of aggregate demand or aggregate supply? What happens to the equilibrium Real GDP and price level when consumer spending decreases? Would this cause a recession or inflation?arrow_forward
- The following graph shows an increase in aggregate demand (AD) in a hypothetical country. Specifically, aggregate demand shifts to the right from AD1 to AD2, causing the quantity of output demanded to rise at all price levels. For example, at a price level of 140, output is now $400 billion, where previously it was $300 billion. 170 160 150 140 - 130 AD2 120 110 AD, 100 90 100 200 300 400 500 600 700 800 OUTPUT (Billions of dollars) The following table lists several determinants of aggregate demand. Complete the table by indicating the change in each determinant necessary to increase aggregate demand. Change Needed to Increase AD Wealth Taxes Interest rates The value of the domestic currency relative to the foreign currency PRICE LEVELarrow_forwardWhen does macroeconomic equilibrium occur? Multiple Choice When exports equal imports. When the aggregate supply equals the long-run Aggregate Supply When the aggregate demand equals the long-run Aggregate Supply. When the aggregate quantity demanded is equal to the aggregate quantity supplied.arrow_forwardThe graph below is associated with a hypothetical country. Consider an increase in aggregate demand (AD). Specifically, aggregate demand shifts to the right from AD1AD1 to AD2AD2, causing the quantity of output demanded to rise at each price level. For instance, at a price level of 140, output is now $400 billion, where initially it was $300 billion. Fill in the missing values in the table by selecting the change in each scenario required to increase aggregate demand. Change required to increase AD Expected rate of return on investment. (decrease/increase) Incomes in other countries (decrease/increase) Consumer expectations about future profitability. (improve/worsen) Government spending (increase/decrease)arrow_forward
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