Let X₁,x₂,and X₃ Be 0-1 Variables Whose Values Indicate Whether

question 2

Multiple Choice

Let x₁,x₂,and x₃ be 0-1 variables whose values indicate whether the projects are not done (0) or are done (1) .Which of the following answers indicates that at least two of the projects must be done?

• A)x₁ + x₂ + x₃ ≥ 2
• B)x₁ + x₂ + x₃ ≤ 2
• C)x₁ + x₂ + x₃ = 2
• D)x₁ − x₂ = 0

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Definitions:

Price Conspiracy

An illegal agreement among competitors to fix prices, control market production, or divide markets to eliminate competition and harm consumers.

Monopoly Market

A market structure characterized by a single seller offering a unique product or service with no close substitutes.

Herfindahl-Hirschman Index

An indicator used to assess the degree of market concentration and establish the intensity of industry competition.

Oligopolist

A market participant in an oligopoly, a market structure dominated by a small number of large firms, influencing pricing and competition.