Evaluate Whether the Following Code Is Efficient

question 3

Essay

Evaluate whether the following code is efficient. If not, recommend a better code.
return powerOf2B( n - 1 ) + powerOf2B( n - 1 );

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Definitions:

Gross Margin

The difference between sales revenue and the cost of goods sold, representing the core profitability of a company's products.

Variable Cost

Costs that vary directly with the level of production or business activity, including expenses such as raw materials and labor.

Machine Hours

The total operating time of machinery used in the production process during a specific period.

High-low Method

A technique used in cost accounting to estimate variable and fixed costs based on the highest and lowest levels of activity.