Round to the Nearest Tenth Unless Indicated Otherwise

question 493

Multiple Choice

Round to the nearest tenth unless indicated otherwise.
-The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 0.1 inch has a resistance of 3 ohms. What would the
Resistance be for a 25 foot length, with diameter 0.01 inch, of the same kind of wire ?

• A) 368 ohms
• B) 372.5 ohms
• C) 375 ohms
• D) 387 ohms

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Definitions:

Inferior Good

A type of good for which demand decreases as the income of consumers increases.

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good consumers are willing to purchase at each price point.

Elastic Demand

A situation in which the demand for a product or service is significantly responsive or sensitive to changes in its price.

Total Revenue

The total amount of money generated from the sale of goods or services before any expenses are subtracted.