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ECON 20A Midterm: ECON20A_Midterm1_2014Fall

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turquoisegnu128
29 Sep 2018
School
UC-Irvine
Department
Economics
Course
ECON 20A
Professor
All

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Multiple choice and true/false questions
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
11. 12. 13. 14. 15.
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Document Summary

What is the opportunity cost to toyland of increasing the production of dolls from 200 to 300? a. b. c. d. Suppose that a decrease in the price of good x results in fewer units of good y being sold. This implies that x and y are a. b. c. d. complementary goods. normal goods. inferior goods. substitute goods: moira decides to spend two hours taking a nap rather than attending her classes. In one month, mike can make 4 tables or 20 chairs, where sandy can make 6 tables or 18 chairs. Given this, we know that the opportunity cost of 1 table is a. b. c. d. 1/5 chair for mike and 1/3 chair for sandy. 1/5 chair for mike and 3 chairs for sandy. 5 chairs for mike and 1/3 chair for sandy. 5 chairs for mike and 3 chairs for sandy. Econ 20a: pizza is a normal good if.

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Related Questions

Your program will take an arithmetic expression as a String input. For Example:

 

  • “1+2*(3/4)”

 

  • “1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14”

 

  • “1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14”

 

Program

 

Your program will determine whether the open brackets (the square brackets, curly braces and the parentheses) are closed in the correct order.

 

Outputs:

 

Output 1

 

1+2*(3/4)

This expression is correct.

 

Output 2

 

1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

This expression is NOT correct.

Error at character # 10. ‘{‘- not closed.

 

Output 3

 

1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14

This expression is correct.

 

Output 4

 

1+2]*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

This expression is NOT correct.

Error at character # 4. ‘]‘- not opened.

Task 1

Solve the above problem using an array-based stack.

 

Task 2

Solve the above problem using a linked list-based stack.

An amusement park, whose customer set is made up of two markets, adults and children, has developed demand schedules as follows:

The marginal operating cost of each unit of quantity is $5. Because marginal cost is a constant, so is an average variable cost. Ignore fixed costs. The owners of the amusement part want to maximize profits.

Price ($)

Quantity

Adults

Children

5

15

20

6

14

18

7

13

16

8

12

14

9

11

12

10

10

10

11

9

8

12

8

6

13

7

4

14

6

2

Calculate the price, quantity, and profit if: The amusement park charges a different price in the adult market

Please express your answers for Price and Profit in whole dollars (i.e.10.00)

Please use whole numbers for Quantity (i.e. 10, 27, 4)

Price

Quantity

Total

Revenue

Marginal

Revenue

Marginal

Cost

Total

Cost

MR-MC

Profit
Ā 

6

84

 Ā 

5

30

 Ā 

34

13

 Ā 

91

7

5

35

2

56

12

8

96

5

5

40

0

 Ā 
Ā 

9

99

3

5

45

-2

54

10

 Ā 

100

1

5

50

-4

50

9

11

99

-1

5

55

-6

 Ā 
Ā 

12

96

-3

5

60

-8

36

7

 Ā 

91

-5

5

65

-10

26

6

14

84

-7

5

70

-12

 Ā 

5

15

75

-9

5

75

-14

0
  1. Complete the following problem using concepts of STACK.
  2. If you are using JAVA, you must include the main method as well which should test your other methods and print the outputs according to the tasks.
  3. If you are using PYTHON, make sure your code has the methods invoked and proper printing statements according to the tasks.
  4. Your program will take an arithmetic expression as a string input. For Example:

     

    • “1+2*(3/4)”

     

    • “1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14”

     

    • “1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14”

     

    Program

     

    Your program will determine whether the open brackets (the square brackets, curly braces, and the parentheses) are closed in the correct order.

     

    Outputs:

     

    Output 1

     

    1+2*(3/4)

    This expression is correct.

     

    Output 2

     

    1+2*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

    This expression is NOT correct.

    Error at character # 10. ‘{‘- not closed.

     

    Output 3

     

    1+2*[3*3+{4–5(6(7/8/9)+10)}–11+(12*8)/{13+13}]+14

    This expression is correct.


    Output 4

     

    1+2]*[3*3+{4–5(6(7/8/9)+10)–11+(12*8)]+14

    This expression is NOT correct.

    Error at character # 4. ‘]‘- not opened.

    Task 1

    Solve the above problem using an array-based stack.

     

    Task 2

    Solve the above problem using a linked list-based stack.