23) Refer to Figure 13.7. Suppose the equilibrium output is initially $600 billion. An increase in wages and an increase in money supply will, for sure, increase A) the price level. B) equilibrium output. C) both the equilibrium output and the price level. D) equilibrium output and decrease the price level.

1) What is a tariff? . . . . 2) If the price level goes down, the real value of money will: . Remain unchanged. Decrease. It can increase or decrease. Increase. . . 3) Which of the following is true? • The equilibrium interest rate varies inversely with money supply. The money supply varies inversely with the price level. The money supply varies directly with the price level. The equilibrium interest rate varies directly with money supply. . . . A limit imposed on the production or sale of a product. A maximum or minimum price placed on a product by government regulation. A restriction placed on the importation of foreign products. A tax or duty levied on imports. 4) What does macroeconomic equilibrium imply? . The point where the quantity of Real GDP demanded equals the quantity of Real GDP supplied. It is where the aggregate demand curve intersects the LAS curve. • Full employment GDP. It is possible only at various price levels. The point where Real GDP is at capacity. . . .

6. Why the aggregate supply curve slopes upward in the short run In the short run, the quantity of output that firms supply can deviate from the natural level of output if the actual price level in the economy deviates from the expected price level. Several theories explain how this might happen. For example, the sticky-price theory asserts that the output prices of some goods and services adjust slowly to changes in the price level. Suppose firms announce the prices for their products in advance, based on an expected price level of 100 for the coming year. Many of the firms sell their goods through catalogs and face high costs of reprinting if they change prices. The actual price level turns out to be 90. Faced with high menu costs, the firms that rely on catalog sales choose not to adjust their prices. Sales from catalogs will v , and firms that rely on catalogs will respond by v the quantity of output they supply. If enough firms face high costs of adjusting prices, the unexpected…

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3. Most global markets have been reporting severe contractions, which mainly responding to the COVID-19 pandemic. The situation is worsened by the decrease in people’s confidence in the government as policymakers, spreading a wave of pessimism towards the future prospect of the economy. Explain how such wave of pessimism, ceteris paribus, may lead to short-term economic fluctuations, which will eventually work to push the economy back towards its long-run equilibrium. Use relevant diagrams to support your answer.

1) Suppose gold (G) and silver (S) are substitutes for each other because both serve as hedges against inflation. Suppose also that the supplies of both are fixed in the short run (Qg = 75 and Qs = 300) and that the demands for gold and silver are given by the following equations: PG = 975 – QG + 0.5Ps and Ps = 600 – Qs + 0.5PG. What are the equilibrium prices of gold and silver?

1) https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/national-income-and-price-determinations/aggregate-demand-ap/v/aggregate-demand 2) https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/national-income-and-price-determinations/aggregate-demand-ap/v/shifts-in-aggregate-demand 3) https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/national-income-and-price-determinations/short-run-aggregate-supply-ap/v/short-run-aggregate-supply 4) https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/national-income-and-price-determinations/long-run-aggregate-supply-ap/v/long-run-aggregate-supply 5) https://www.youtube.com/watch?v=xP4y2m16NH8 please I need a short summaries of these videos.

3. Why the aggregate demand curve slopes downward The graph below shows the aggregate demand (AD) curve for a hypothetical economy. At point X, the quantity of output demanded is $500 billion, and the price level is 120. Moving up along the AD curve from point X to point Y, the quantity of output demanded falls to $300 billion, and the price level rises to 140. PRICE LEVEL 170 160 150 140 130 120 110 100 90 Y X AD (?

Question 3 Price level LOND 2 AS AD₂ AD₁ Q₁ Q₂ Q3 Real domestic output Refer to the above diagram. If the equilibrium price level is P ₁, then: producers will supply output level Q₁. O the equilibrium output level is Q2. aggregate demand is AD2. the equilibrium output level is Q3.

which makes sense to bubble in?