Solve the Problem $= 4 \mathrm {~km}$ , Width $= 2 \mathrm {~km}$

question 25

Multiple Choice

Solve the problem.
-The width of a rectangle is 6 kilometers less than twice its length. If its area is 56 square kilometers, find the dimensions of the rectangle.

• A) length \(= 4 \mathrm {~km}\), width \(= 2 \mathrm {~km}\)
• B) length \(= 3 \mathrm {~km}\), width \(= \frac { 56 } { 3 } \mathrm {~km}\)
• C) length \(= 7 \mathrm {~km}\), width \(= 8 \mathrm {~km}\)
• D) width \(= 7 \mathrm {~km}\), length \(= 8 \mathrm {~km}\)

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Definitions:

Product-Variety Externality

External benefits or costs to society resulting from a variety of products beyond what would be provided by market forces alone.

Business-Stealing Externality

A negative externality that occurs when new products or services enter a market, reducing the sales and profitability of existing products or services.

Spillover Costs

Costs that affect parties who are not directly involved in a transaction or economic activity.

Advertising

The activity or profession of producing advertisements for commercial products or services, aiming to influence consumer behavior and preferences.