The Length of a Rectangle Is 4 More Than the Width

question 149

Multiple Choice

The length of a rectangle is 4 more than the width. The area is 21 square inches. Find the dimensions.

• A) The width is 3 inches, the length is 7 inches.
• B) The width is 7 inches, the length is 3 inches.
• C) The width is 2 inches, the length is 6 inches.
• D) The width is 3 inches, the length is 10 inches.
• E) The width is 6 inches, the length is 10 inches.

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Definitions:

Total-Cost Curve

A graph that shows the total cost of producing different quantities of a good or service.

Marginal-Cost Curve

A graphical representation that shows how the cost of producing one additional unit of a good varies as the production volume changes.

Average-Fixed-Cost Curve

A graphical representation that shows the fixed costs of production per unit of output declining as the quantity of output increases.

Marginal-Cost Curve

A graphical representation that shows the cost of producing one more unit of a good.