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ECON101 Lecture Notes - Lecture 6: Demand Curve, The O.C., Marker Pen

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School
University of Waterloo
Department
Economics
Course
ECON101
Professor
Nafeez Fatima

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ECON101 Full Course Notes
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Document Summary

The budget line describes the limits of a consumer"s consumption. We can describe the budget line by using a budget equation. The budget equation can be rearranged to find the relationship between the quantities by dividing both sides of the equation by the price of one quantity (e. g. , pp) Qp = y / pp - (pm / pp)qm. Budget equation contains two variables chose by the household (qm and qp) and two variables that the household takes as a given (y/pp) and (pm/pp) Household"s real income is expressed as a quantity of goods that the household can buy. E. g. , lisa"s real income in terms of pop is 10 cases. Relative price is calculating the opportunity cost of one good in relation to the other. The relative price of a good in terms of another good is the magnitude of the slope. When the price changes, so does the budget line.

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Related Questions

Let us have an economy that lives only for 2 periods. The representative household has a utility function that values consumption goods for any period as follows

u(c) = ln(c).

The valuation throughout both periods can be represented as a total utility function that discounts future utility with a β discount parameter as follows,

U(c1, c2) = u(c1) + βu(c2) = ln(c1) + β ln(c2),

where ct represent consumption good in period t for every period t = 1, 2. The budget constraint for this person in every period is expressed as

(1+τtc)ct + xt =(1−τtI)(wtnt +rtkt), t=1,2.

where xt represent investment in period t, wt the wages earned by hours worked, rt the return of capital in period t, nt the hours worked supplied by the household in every period t, kt the stock of capital that the household has in period t, τtc the tax rate imposed by the government in consumption goods in every period t, and τtI the tax rate imposed by the government to total household income in every period t. In every period, the total amount of hours that the representative household is of H ̄ = 1. Investment in every period can be defined by the following law of motion of capital

kt+1 = xt +(1−δ)kt, t=1,2.

Acknowledge that k3 = 0 because there is no period 3 in this economy. The household starts with a given amount of capital k ̄1 > 0. The representative firm produces good by the following production function in every period t,

Yt =ztKtαNt1−α, t=1,2.

There is a government that covers government expenditures in period 1 and period 2 by taxing capital rent and labor. Hence, their budget can be expressed as

τtcct +τtI(wtnt +rtkt)=gt, t=1,2.

a) Before writing any competitive equilibrium definition or the Social Planner Problem, can we modify the budget constraint in 
order to get rid a variable in every period? Explain.

b) Define the Social Planner Problem.

c) Solve the Social Planner Problem. This is, find the Euler equation in terms of exogenous variables and the only endogenous variable k2.

d) Define the tax distorted competitive equilibrium of this economy.

e) Solve the representative household problem.

f) Solve the representative firm problem in period 1 and 2.

g) Find the optimal Euler equation in terms of exogenous variables and the only endogenous variable k2.

h) Imagine that the government can only implement income taxes. This is τtc = 0 for every period t = 1, 2. Can the government implement a tax plan that achieves the Pareto allocation reached by the Social Planner Problem?

i) Imagine that the government can only implement consumption taxes. This is τtI = 0 for every period t = 1,2. Can the government implement a tax plan that achieves the Pareto allocation reached by the Social Planner Problem? 


1.The classical theory of inflation

A. Is also known as the quantity theory of money.

B.was developed by some of the earliest economic thinkers.

C.is used by most modern economists to explain the long-run determinants of the inflation rate.

D.All of the above are correct.

2.To explain the long-run determinants of the price level and the inflation rate, most economists today rely on the

A.quantity theory of money.

B.price-index theory of money.

C.theory of hyperinflation.

D.disequilibrium theory of money and inflation.

3.When the price level rises, the number of dollars needed to buy a representative basket of goods

A.increases, and so the value of money rises.

B.increases, and so the value of money falls.

C.decreases, and so the value of money rises.

D.decreases, and so the value of money falls

4.The supply of money is determined by

A.the price level.

B.the Treasury and Congressional Budget Office.

C.the Federal Reserve System.

D.the demand for money.

6.Economic variables whose values are measured in monetary units are called

A.dichotomous variables.

B.nominal variables.

C.classical variables.

D.real variables.

7.Economic variables whose values are measured in goods are called

A.dichotomous variables.

B.nominal variables.

C.classical variables.

D.real variables.

7.The classical dichotomy refers to the idea that the supply of money

A. is irrelevant for understanding the determinants of nominal and real variables.

B.determines nominal variables, but not real variables.

C.determines real variables, but not nominal variables.

D.is a determinant of both real and nominal variables.

8.According to the classical dichotomy, when the money supply doubles, which of the following also doubles?

A.the price level

B.nominal wages

C.nominal GDP

D.All of the above are correct.

9.Monetary neutrality implies that an increase in the quantity of money will

A.increase employment.

B.increase the price level.

C.increase the incentive to save.

D.not increase any of the above.

10.The velocity of money is

A.the rate at which the Fed puts money into the economy.

B.the same thing as the long-term growth rate of the money supply.

C.the money supply divided by nominal GDP.

D.the average number of times per year a dollar is spent.

11.If M = 4,000, P = 1.5, and Y= 6,000, what is velocity?

A.2.25

B.3.00

C.6.50

D.None of the above is correct.

12.According to the assumptions of the quantity theory of money, if the money supply increases by 5 per cent, then

A.nominal and real GDP would rise by 5 per cent.

B.nominal GDP would rise by 5 per cent; real GDP would be unchanged.

C.nominal GDP would be unchanged; real GDP would rise by 5 per cent.

D.neither nominal GDP nor real GDP would change.

13.The inflation tax refers to

A.the revenue a government creates by printing money.

B.higher inflation which requires more frequent price changes.

C.the idea that other things the same, an increase in the tax rate raises the inflation rate.

D.taxes being indexed for inflation.

14.The inflation tax falls most heavily on

A.those who hold a lot of currency and accounts for a large share of U.S. government revenue.

B.those who hold a lot of currency but accounts for a small share of U.S. government revenue.

C.those who hold little currency and accounts for a large share of U.S. government revenue.

D.those who hold little currency but accounts for a small share of U.S. government revenue.

15.The claim that increases in the growth rate of the money supply increase nominal interest rates but not real interest rates is known as the

A.Friedman Effect.

B.Hume Effect.

C.Fisher Effect.

D.None of the above is correct.

16.The nominal interest rate is 3 per cent and the inflation rate is 2 per cent. What is the real interest rate?

A.6 per cent

B.5 per cent

C.1.5 per cent

D.1 per cent

17.Which of the following helps to explain why the inflation fallacy is a fallacy?

A.Increases in the price level can be created by increases in money demand.

B.Nominal incomes tend to rise at the same time that the price level is rising.

C.As the price level rises, the value of a dollar falls.

D.Inflation only changes nominal variables.

18.The shoe-leather cost of inflation refers to

A.the re distributional effects of unexpected inflation.

B.the time spent searching for low prices when inflation rises.

C.the waste of resources used to maintain lower money holdings.

D.the increased cost to the government of printing more money.

19.Which of the following is an example of menu costs?

A.deciding on new prices

B.printing new price-lists

C.advertising new prices

D.All of the above are examples of menu costs.

20.Which of the following are U.S. taxpayers allowed to adjust for inflation for income taxes?

A.both interest in income and capital gains.

B.interest income but not capital gains.

C.capital gains but net interest income.

D.neither interest income nor capital gains.

21.You put money into an account and earn a real interest rate of 4 per cent. Inflation is 2 per cent, and your marginal tax rate is 20 per cent. What is your after-tax real rate of interest?

A.1.2 per cent

B.2.8 per cent

C.4.8 per cent

D.None of the above is correct.

22.Which of the following is correct? Inflation

A.impedes financial markets in their role of allocating resources.

B.reduces the purchasing power of the average consumer.

C.generally increases after-tax real interest rates.

D.is most costly when anticipated.

23.Wealth is redistributed from creditors to debtors when inflation is

A.high, whether it is expected or not.

B.low, whether it is expected or not.

C.unexpectedly high.

D.unexpectedly low.

10.

The long-run aggregate supply curve (LRAS) is Y = Yf, which depends on the amounts of resources and the level of technology innovation. If a country has more resources and better technology, which of the following is true?

A. The LRAS curve will shift to the right.

B. The SRAS will shift to the right.

C. The SRAS will shift to the left.

D. Only A and B.

E. Only A and C.

11.

Suppose the wage rates of workers are based on the expected price level. If there is an unexpected increase in AD, it will cause the actual price level to increase. Then workers should raise their expected price level and negotiate a higher wage rate. Then which of the following is most likely to be true when the expected price increases?

A. The SRAS curve will shift rightward.

B. The SRAS curve will shift leftward.

C. The LRAS curve will shift leftward.

D. Only A and C.

E. Only B and C.

12.

Suppose the economy is in the long-run equilibrium, i.e., Y = Yf, and there is an unexpected decrease in AD. Assume that Yf is fixed, then which of the following is most likely to be true?

A. The SRAS curve will shift to the right toward the new long-run equilibrium.

B. The SRAS curve will shift to the left toward the new long-run equilibrium.

C. In the new long-run equilibrium, price level will be higher.

D. Only A and C.

E. Only B and C.

13.

The short-run (SR) equilibrium is the intersection between AD and SRAS, and long-run (LR) equilibrium is the intersection between AD and LRAS. Every LR equilibrium is a SR equilibrium, but a SR equilibrium is not always the LR equilibrium. If an economy is operating at a SR equilibrium where Y > Yf, which of the following will occur in the process toward the new LR equilibrium when the economy corrects itself?

A. Price increases.

B. Real GDP decreases.

C. Unemployment rate falls.

D. Only A and B.

E. Only B and C.

14.

From the Keynesians, Y = C + I + G + NX can be transformed into a theoretical model. In particular, assume that the consumption C = A + mpc (Y-T), where A is a constant, mpc is the marginal propensity to consume, Y is national income and T is income taxes. Suppose in the goods market equilibrium, aggregate expenditure = national income such that the two Y's will be the same from Y = A + mpc (Y-T) + I + G+ NX. . Suppose C = 400 + 0.75(Y – T). G = 100, I = 100, T = 100, and NX = 150, what is the Y in the goods market equilibrium? (All of the variables are in terms of million dollars)

$ million
Please enter a whole number, with no decimal point.

15.

Continue to assume that C = 400 + 0.75 (Y - 100), I = 100, and NX = 150. But the government now increases spending from 100 to 200, how much is the new Y in the goods market equilibrium?

$ million
Please enter a whole number, with no decimal point.

16.

Continue to assume that C = 400 + 0.75 (Y - 100). Then which of the following is true?

A. The government spending multiplier = 4.

B. The tax multiplier = 3.

C. If the government increases spending by $50 million, and at the same time increases taxes by $50 milion to balance the budget, AD will shift to the right by $50 million.

D. Only A and C.

E. Only B and C.

17.

Suppose the federal government needs to balance the budget, which means that when the government spending increases, taxes must increase equally. In this case, government spending multiplier is called the balanced-budget multiplier, defined as the increase in real GDP/increase in government spending. By following the example from the previous question, how mcuh is the balanced-budget multiplier?


Please enter a whole number, with no decimal point.