ECON 101 Quiz: ECON 101 IA State Quiz1 S2001

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turquoisegnu128

31 Jan 2019

School

Iowa State University

Department

Economics

Course

ECON 101

Professor

All

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Document Summary

For questions 1- 9, consider firms using a technology with cost and marginal cost functions: Cost (q) = 256 + 16 q + q2. This means that with divisible items, the monopolist obtains the entire area bounded by the vertical axis, the demand curve, the quantity where price is equal to marginal cost, and the horizontal axis. This area is a rectangle with a triangle above it. For a linear inverse demand function (p = a + bq), this area is given by p*q* + (a-p*)q* where q* is the amount produced and p* is obtained by substituting this amount in inverse demand. The following graph may be helpful to you in terms of conceptualizing the problem. It contains a long run average cost curve (lrac), a long run marginal cost curve (lrmc), and short run average (srac) and marginal cost curves (srmc) for plant sizes designed for 6 and 14 units of output.

Related Questions

Suppose that each firm in a competitive industry has the following costs:

Total Cost: TC=50+1/2 q2

Marginal Cost: MC=q

where q is an individual firm's quantity produced.

The market demand curve for this product is:

Demand QD=140-2P

where P is the price and Q is the total quantity of the good.

Each firm's fixed cost is $__________

What is each firm's variable cost?

_______ 50+1/2q

_______1/2q

_______q

_______1/2q2

Which of the following represents the equation for each firm's average total cost?

_____ 50/q

_______ 50/q+1/2q

_______1/2q

_______50+1/2q

Complete the following table by computing the marginal cost and average total cost for from 5 to 15.

5
6
7
8
9
10
11
12
13
14
15

The average total cost is at its minimum when the quantity each firm produces (q) iquals ________

Which of the following represents the equation for each firm's supply curve in the short run?

_______1/2q2

______q

_____50-q

_____120-1/2q2

In the long run, the firm will remain in the market and produce if________

Currently, there are 8 firms in the market.

In the short run, in which the number of firms is fixed, the equilibrium price is__________ In the short run, in which the number of firms is fixed, the equilibrium price is

________units. Each firm produces ________ nits. (Hint: Total supply in the market equals the number of firms times the quantity supplied by each firm.)

In this equilibrium, each firm makes a profit of _______ . (Note: Enter a negative number if the firm is incurring a loss.)

Firms have an incentive to EXIT/ENTER the market.

In the long run, with free entry and exit, the equilibrium price is _______and the total quantity produced in the market is__________units. There are ________

firms in the market, with each firm producing _________units.

orchidbadger835

1. Suppose you are given the following information about a particular industry:

Market demand : Q^D = 6500-100P

Market supply : Q^S = 1200P

Firm total cost function: C(q) = 722 + q^2/200

Firm marginal cost function: MC(q)=2q/200

Assume that all firms are identical and that the market is competitive.

a. Find the equilibrium market price and quantity, the output supplied by the firm, and the firm's profits.

b. Would you expect to see entry into or exit from the industry in the long-run? Explain. What effect will entry or exit have on market equilibrium?

c. What is the lowest price at which each firm would sell its output in the long run? Is profit positive, negative, or zero at this price? Explain.

d.What is the lowest price at which each firm would sell its output in the short run? Is profit positive, negative, or zero at this price? Explain.

lavenderdinosaur371

The following table shows the demand curve and cost information for a firm that is monopoly

Price	Quantity	TC
$10	0	$500
$9	200	$1,000
$8	400	$1,600
$7	600	$2,500
$6	800	$4,000

What quantity should they produce to maximize their profits?

200 units

400 units

800 units

600 units

Mary competes in a monopolistically competitive market. Suddenly, 5 new firms enter the market causing her perceived demand curve to shift. The following tables show her original and new demand curves and her cost information.

Assume that Mary can only choose from the quantities of output given in the table. By how will the quantity that she produces change after the new firms enter the market?

Original Demand Curve

Price	quantity	TC
30	0	$130
25	10	$140
20	20	$260
15	30	$450
10	40	$660

New Demand Curve

25	0	$130
20	10	$140
15	20	$260
10	30	$450
5	40	$660

Decrease by 5

Decrease by 10

Increase by 10

Increase by 5

Monopolistic competitor has the following information about cost and demand

Quantity	Price($)	Total Revenue ($)	Marginal Revenue ($)	Total Cost ($)	Marginal Cost ($)	Average Cost ($)
0	25	0	25	30	----	----
2	24	48	23	35	2.5	17.5
4	23	92	21	45	5	11.25
6	22	132	19	60	7.5	10
8	21	168	17	77	8.5	9.63
10	20	200	15	100	11.5	10
12	19	228	13	126	13	10.5
14	18	252	11	165	19.5	11.79
16	17	272	9	210	22.5	13.13
18	16	288	7	260	25	14.44
20	15	300	5	320	30	16

If this industry was perfectly competitive, what price would the good sell for?

$19

$23

$21

$15

Monopolistic competitor has the following information about cost and demand

Quantity	Price($)	Total Revenue ($)	Marginal Revenue ($)	Total Cost ($)	Marginal Cost ($)	Average Cost ($)
0	25	0	25	30	----	----
2	24	48	23	35	2.5	17.5
4	23	92	21	45	5	11.25
6	22	132	19	60	7.5	10
8	21	168	17	77	8.5	9.63
10	20	200	15	100	11.5	10
12	19	228	13	126	13	10.5
14	18	252	11	165	19.5	11.79
16	17	272	9	210	22.5	13.13
18	16	288	7	260	25	14.44
20	15	300	5	320	30	16

What will the firm

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ECON 101 Quiz: ECON 101 IA State Quiz1 S2001

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