The Lengths of the Edges of a Cube Are Increasing

question 30

Multiple Choice

The lengths of the edges of a cube are increasing at a rate of 7 ft/min. At what rate is the surface area changing when the edges are 22 ft long?

• A)294 ft2/min
• B)1848 ft2/min
• C)924 ft2/min
• D)6468 ft2/min
• E)154 ft2/min

---

Definitions:

Net Income

The total earnings of a company after subtracting all expenses, including taxes, interest, and operating expenses, from its total revenue.

Selling Price

The amount for which a product or service is sold to customers, determined by factors like cost, market demand, and competition.

Fixed Costs

Charges that persist unchanged with fluctuations in production or sales activities, such as leasing costs, employee salaries, and insurance fees.

Contribution Margin Technique

A method used in managerial accounting to analyze the profitability of products, segments, or services by calculating revenues minus variable costs.