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In Problems 25-34, use the matrices below. Perform the indicated operations. A = [ 2 5 4 1 4 3 1 − 3 − 2 ] B = [ − 1 2 1 − 5 8 2 − 7 11 − 3 ] I = [ 1 0 0 0 1 0 0 0 1 ] C = [ 3 0 4 1 7 − 1 3 0 4 ] D = [ 4 4 − 8 − 1 − 1 2 − 3 − 3 6 ] F = [ 0 1 2 0 0 − 4 0 0 0 ] Z = [ 0 0 0 0 0 0 0 0 0 ] 31. A I

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Mathematical Applications for the ...

12th Edition
Ronald J. Harshbarger + 1 other
Publisher: Cengage Learning
ISBN: 9781337625340

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Chapter
Section
BuyFindarrow_forward

Mathematical Applications for the ...

12th Edition
Ronald J. Harshbarger + 1 other
Publisher: Cengage Learning
ISBN: 9781337625340
Chapter 3.2, Problem 31E
Textbook Problem
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In Problems 25-34, use the matrices below. Perform the indicated operations.

A = [ 2 5 4 1 4 3 1 3 2 ]

B = [ 1 2 1 5 8 2 7 11 3 ]

I = [ 1 0 0 0 1 0 0 0 1 ]

C = [ 3 0 4 1 7 1 3 0 4 ]

D = [ 4 4 8 1 1 2 3 3 6 ]

F = [ 0 1 2 0 0 4 0 0 0 ]

Z = [ 0 0 0 0 0 0 0 0 0 ]

31. A I

To determine

The product of matrices A and I, where A=[ 254143132 ] and I=[ 100010001 ].

Explanation of Solution

Given information:

A=[ 254143132 ],I=[ 100010001 ].

Formula used:

Matrix A is of order m×n and matrix B is of order n×p, hence, the product of A and B is AB of order m×p, with the ijth entry of AB as given by the formula,

ABij=ai1b1j+ai2b2j+.....+ainbnj.

Calculation:

Multiplication of matrices A and I is

AI=[ 254143132 ][ 100010001 ]

[ 21+50+4020+51+4020+5⋅</

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Chapter 3 Solutions

Mathematical Applications for the Management, Life, and Social Sciences
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Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - Use the following matrices for Problems...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems 15-28, perform the operations if...Ch. 3.1 - In Problems , find and. Ch. 3.1 - In Problems , find and. Ch. 3.1 - In Problems , find and. Ch. 3.1 - In Problems , find and. Ch. 3.1 - 33. Solve for if Ch. 3.1 - 34. Find and if Ch. 3.1 - 35. Endangered species The tables below give the...Ch. 3.1 - 36. Asian demographics The following tables show...Ch. 3.1 - 37. Pollution Abatement The following tables...Ch. 3.1 - 38. Population The following tables give U.S....Ch. 3.1 - 39. Sales Let matrix A represent the sales (in...Ch. 3.1 - 40. Opinion polls A poll of people revealed...Ch. 3.1 - 41. Life expectancy The following table gives...Ch. 3.1 - 42. National health expenditures The following...Ch. 3.1 - 43. Energy trade and consumption The following...Ch. 3.1 - 44. Debt payment Ace, Baker, and Champ are being...Ch. 3.1 - 45. Expense accounts A sales associate’s expense...Ch. 3.1 - 46. Debt payment When a firm buys another company,...Ch. 3.1 - 47. Management Management is attempting to...Ch. 3.1 - 48. Ranking To rank the five members of a...Ch. 3.1 - 49. Production and inventories Operating from two...Ch. 3.1 - . Management The following figure depicts the...Ch. 3.1 - 51. Management In an evaluation of labor...Ch. 3.1 - 52. Suppose that for the workers and the work...Ch. 3.1 - 53. For the data in the Problem , use an Excel...Ch. 3.1 - 54. For the data in problem, use an Excel...Ch. 3.2 - What is element if with and Ch. 3.2 - 2. Find the product. and Ch. 3.2 - 3. (a) Compute if and (b) Can the product...Ch. 3.2 - In Problems 1-4, multiply the matrices. Ch. 3.2 - In Problems 1-4, multiply the matrices. Ch. 3.2 - In Problems 1-4, multiply the matrices. Ch. 3.2 - In Problems 1-4, multiply the matrices. Ch. 3.2 - In Problems 5-24, use matrices through. In...Ch. 3.2 - In Problems 5-24, use matrices through. In...Ch. 3.2 - In Problems 5-24, use matrices through. In...Ch. 3.2 - In Problems 5-24, use matrices through. In...Ch. 3.2 - In Problems 5-24, use matrices through. In...Ch. 3.2 - In Problems 5-24, use matrices through. 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In...Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - In Problems 25-34, use the matrices below....Ch. 3.2 - 35. Is it true for matrices (as it is for real...Ch. 3.2 - 36. Is it true for matrices (as it is for real...Ch. 3.2 - 37. (a) Find and if and (b) For...Ch. 3.2 - 38. For Are and defined? What size is each...Ch. 3.2 - In each of Problems 39-42, substitute the given...Ch. 3.2 - In each of Problems , substitute the given values...Ch. 3.2 - In each of the Problems , substitute the given...Ch. 3.2 - In each of the Problems , substitute the given...Ch. 3.2 - In Problems and, use technology to find the...Ch. 3.2 - In Problems and , use technology to find the...Ch. 3.2 - 45. Car pricing A car dealer can buy midsize cars...Ch. 3.2 - . Revenue A clothing manufacturer has factories...Ch. 3.2 - 47. Household energy usage Delivered energy is...Ch. 3.2 - . Area and population Matrix below gives the...Ch. 3.2 - 49. Population dynamics Suppose that for a...Ch. 3.2 - 50. Nutrition Suppose the weights (in grams) and...Ch. 3.2 - Encoding messages Multiplication by a matrix can...Ch. 3.2 - Encoding messages Multiplication by a matrix can...Ch. 3.2 - Oil refineries When gasoline is refined from...Ch. 3.2 - 54. Production A manufacturer of small kitchen...Ch. 3.2 - 55. Accounting The annual budget of the Magnum...Ch. 3.2 - 56. Accounting Consider the original budget...Ch. 3.3 - CHECKPOINT (a) Write the augmented matrix for...Ch. 3.3 - CHECKPOINT 2. Solve the system. Ch. 3.3 - CHECKPOINT For each system of equations, the...Ch. 3.3 - CHECKPOINT For each system of equations, the...Ch. 3.3 - CHECKPOINT For each system of equations, the...Ch. 3.3 - In a problem 1 and 2 use the indicated row...Ch. 3.3 - In problem 1 and 2, use the indicated row...Ch. 3.3 - In problem 3 and 4, write the augmented matrix...Ch. 3.3 - In problem 3 and 4, write the augmented matrix...Ch. 3.3 - In problem 5-10, an augmented matrix for a...Ch. 3.3 - In problem 5-10, an augmented matrix for a system...Ch. 3.3 - In problem 5-10, an augmented matrix for a system...Ch. 3.3 - In problem 5-10, an augmented matrix for a system...Ch. 3.3 - In problem 5-10, an augmented matrix for a system...Ch. 3.3 - In problem 5-10, an augmented matrix for a system...Ch. 3.3 - In problem 11-16, use row operations on...Ch. 3.3 - In problem 11-16, use row operations on...Ch. 3.3 - In problem 11-16, use row operations on augmented...Ch. 3.3 - In problem 11-16, use row operations on augmented...Ch. 3.3 - In problem 11-16, use row operations on augmented...Ch. 3.3 - In problem 11-16, use row operations on augmented...Ch. 3.3 - In problem 17- 20, a system of linear equations...Ch. 3.3 - In problem 17- 20, a system of linear equations...Ch. 3.3 - In problem 17- 20, a system of linear equations...Ch. 3.3 - In problem 17- 20, a system of linear equations...Ch. 3.3 - 21. How can you tell that a system of linear...Ch. 3.3 - 22. Describe the procedure for finding the...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In systems of equations in problem 23 – 36 may...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - In problems 37-42, use technology to solve each...Ch. 3.3 - 43. Solve for This gives a formula for solving...Ch. 3.3 - 44. Solve for This gives a formula for solving...Ch. 3.3 - 45. Nutrition A preschool has Campbell’s Chunky...Ch. 3.3 - 46. Ticket sales A 3500-seat theatre sells...Ch. 3.3 - 47. Investment A man has $235,000 invested in...Ch. 3.3 - 48. Loans A bank lent $1.2 million for the...Ch. 3.3 - 49. Car rental patterns A car rental agency in...Ch. 3.3 - 50. Nutrition A psychologist studying the...Ch. 3.3 - 51. Nutrition The following table gives the...Ch. 3.3 - 52. Investment A brokerage house offers three...Ch. 3.3 - 53. Investment Suppose that portfolios I and II...Ch. 3.3 - 54. Nutrition Each ounce of substance A supplies...Ch. 3.3 - 55. Nutrition A glass of skim milk supplies 0.1 mg...Ch. 3.3 - 56. 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[Type text] Ch. 3.4 - [Type text] In Problems 5-10, find the inverse...Ch. 3.4 - [Type text] In Problems 5-10, find the inverse...Ch. 3.4 - [Type text] In Problems 5-10, find the inverse...Ch. 3.4 - [Type here] In Problems 5-10, find the inverse...Ch. 3.4 - [Type here] In Problems 5-10, find the inverse...Ch. 3.4 - [Type here] In Problems 5-10, find the inverse...Ch. 3.4 - [Type here] In Problems 11-14, find the inverses...Ch. 3.4 - [Type here] In Problems 11-14, find the inverses...Ch. 3.4 - [Type here] In Problems 11-14, find the inverses...Ch. 3.4 - [Type here] In Problems 11-14, find the inverses...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] In Problems 15-20, find the inverse...Ch. 3.4 - [Type here] 21. Find the inverse of [Type here] Ch. 3.4 - [Type here] 22. Find the inverse of [Type...Ch. 3.4 - [Type here] In Problems 23-26, the inverse of...Ch. 3.4 - [Type here] In Problems 23-26, the inverse of...Ch. 3.4 - [Type here] In Problems 23-26, the inverse of...Ch. 3.4 - [Type here] In Problems 23-26, the inverse of...Ch. 3.4 - [Type here] 27. Use the inverse found in Problem...Ch. 3.4 - [Type here] 28. Use the inverse found in Problem...Ch. 3.4 - [Type here] In Problems 29-32, use inverse...Ch. 3.4 - [Type here] In Problems 29-32, use inverse...Ch. 3.4 - [Type here] In Problems 29-32, use inverse...Ch. 3.4 - [Type here] In Problems 29-32, use inverse...Ch. 3.4 - In Problems 33-38, use inverse matrices to find...Ch. 3.4 - In Problems 33-38, use inverse matrices to find...Ch. 3.4 - [Type here] In Problems 33-38, use inverse...Ch. 3.4 - In Problems 33-38, use inverse matrices to find...Ch. 3.4 - In Problems 33-38, use inverse matrices to find...Ch. 3.4 - In Problems 33-38, use inverse matrices to find...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - In Problems 39-46, (a) evaluate each determinant...Ch. 3.4 - Decoding In Problems 47-50, use the code from the...Ch. 3.4 - Decoding In Problems 47-50, use the code from the...Ch. 3.4 - Decoding In Problems 47-50, use the code from the...Ch. 3.4 - Decoding In Problems 47-50, use the code from the...Ch. 3.4 - 51. Competition A product is made by only two...Ch. 3.4 - 52. Demographics Suppose that a government study...Ch. 3.4 - In Problems 53-63, set up each system of...Ch. 3.4 - In Problems 53-63, set up each system of...Ch. 3.4 - In Problems, set up each system of equations and...Ch. 3.4 - In problems , set up each system of equations...Ch. 3.4 - In Problems 5363, set up each system of equations...Ch. 3.4 - In Problems 5363, set up each system of equations...Ch. 3.4 - In Problems set up each system of equations and...Ch. 3.4 - In Problems set up each system of equations and...Ch. 3.4 - In Problems 53-63, set up each system of equations...Ch. 3.4 - In Problems set up each system of equations and...Ch. 3.5 - CHECKPOINT The following technology matrix for a...Ch. 3.5 - CHECKPOINT The following technology matrix for a...Ch. 3.5 - CHECKPOINT 3. Suppose a primitive economy has wood...Ch. 3.5 - CHECKPOINT 4. For a closed Leontief model: What...Ch. 3.5 - The following technology matrix for a simple...Ch. 3.5 - For the economy in Problem 1, what industry is...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - The following technology matrix describes the...Ch. 3.5 - Suppose a primitive economy consists of two...Ch. 3.5 - Suppose an economy has two industries, agriculture...Ch. 3.5 - An economy is based on two industries, utilities...Ch. 3.5 - A primitive economy has a mining industry and a...Ch. 3.5 - Suppose the economy of an underdeveloped country...Ch. 3.5 - Suppose a simple economy with only an agricultural...Ch. 3.5 - One sector of an economy consists of a mining...Ch. 3.5 - An underdeveloped country has an agricultural...Ch. 3.5 - A simple economy has an electronic components...Ch. 3.5 - An economy has an agricultural industry and a...Ch. 3.5 - A primitive economy consists of a fishing industry...Ch. 3.5 - An economy has a manufacturing industry and a...Ch. 3.5 - Interdepartmental costs Within a company is a...Ch. 3.5 - Interdepartmental costs Within a company is a...Ch. 3.5 - Interdepartmental costs Within a company is a...Ch. 3.5 - Interdepartmental costs Within a company is a...Ch. 3.5 - Suppose that an economy has three industries...Ch. 3.5 - Suppose that an economy has the same technology...Ch. 3.5 - Suppose that the economy of a small nation has an...Ch. 3.5 - Suppose an economy has the same technology matrix...Ch. 3.5 - Suppose that a simple economy has three...Ch. 3.5 - Suppose that an economy has the same technology...Ch. 3.5 - Problems 33-38 refer to closed Leontief models....Ch. 3.5 - Problems 33-38 refer to closed Leontief models....Ch. 3.5 - Problems 33-38 refer to closed Leontief models....Ch. 3.5 - Problems 33-38 refer to closed Leontief models....Ch. 3.5 - Problems 33-38 refer to closed Leontief models....Ch. 3.5 - Problems 33-38 refer to closed Leontief models. A...Ch. 3.5 - For the storage shed in Example 6, find the number...Ch. 3.5 - Card tables are made by joining legs and a top...Ch. 3.5 - A sawhorse is made from pairs of legs and a top...Ch. 3.5 - A log carrier has a body made from a -ft length of...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - Use the matrices below a needed to complete...Ch. 3 - In Problems 26-28, the reduced matrix for a system...Ch. 3 - In Problems 26-28, the reduced matrix for a system...Ch. 3 - In Problems 26-28, the reduced matrix for a system...Ch. 3 - Given the following augmented matrix representing...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - In Problems 30-36, solve each system using...Ch. 3 - 37. Are and inverse matrices if and Ch. 3 - In problems 38-40, find the inverse of each...Ch. 3 - In problems 38-40, find the inverse of each...Ch. 3 - In problems 38-40, find the inverse of each...Ch. 3 - In Problems 41-43, solve each system of equations...Ch. 3 - In Problems 41-43, solve each system of equations...Ch. 3 - In Problems 41-43, solve each system of equations...Ch. 3 - 44. Does the following matrix have an inverse? Ch. 3 - In Problems 45 and 46: Find the determinant of...Ch. 3 - In Problems 45 and 46: Find the determinant of the...Ch. 3 - The Burr Cabinet Company manufactures bookcases...Ch. 3 - The Burr Cabinet Company manufactures bookcases...Ch. 3 - The Burr Cabinet Company manufactures bookcases...Ch. 3 - A small church choir is made up of men and women...Ch. 3 - A small church choir is made up of men and women...Ch. 3 - Manufacturing Two departments of a firm, and ,...Ch. 3 - Investment Over the period of time, the return...Ch. 3 - Investment A woman has to invest. She has decided...Ch. 3 - Nutrition A biologist is growing three different...Ch. 3 - Transportation An airline company has three types...Ch. 3 - Economy models An economy has a shipping industry...Ch. 3 - Economy models A simple economy has a shoe...Ch. 3 - Economy models A look at the industrial sector of...Ch. 3 - Economy models Suppose a closed Leontief model for...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - In problems 1-6, perform the indicated matrix...Ch. 3 - Find the inverse of the matrix . Ch. 3 - Find the inverse of the matrix . Ch. 3 - If and and find the matrix. Ch. 3 - Solve Ch. 3 - Solve Ch. 3 - Solve Ch. 3 - Use an inverse matrix to solve Ch. 3 - Solve Ch. 3 - Suppose that the solution of an investment problem...Ch. 3 - In an ecological model, matrix gives the...Ch. 3 - 17. A furniture manufacturer produces four...Ch. 3 - . 18. Complete parts (a) and (b) using the code...Ch. 3 - 19. A young couple with a inheritance wants to...Ch. 3 - 20. Suppose an economy has two industries,...Ch. 3 - 21. Suppose the technology matrix for a closed...Ch. 3 - Use the following information in Problem ...Ch. 3 - Use the following information in Problem ...Ch. 3 - 24. A simple closed economy has the technology...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - I. Taxation Federal income tax allows a deduction...Ch. 3 - II. Company Profits after Bonuses and Taxes A...Ch. 3 - II. Company Profits after Bonuses and Taxes A...Ch. 3 - II. Company Profits after Bonuses and Taxes A...Ch. 3 - II. Company Profits after Bonuses and Taxes A...

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