Express the Rule in Function Notation $5$ , Then Take the Square Root

question 17

Multiple Choice

Express the rule in function notation.
Square, subtract $5$ , then take the square root.

• A)
• \(f ( x ) = \sqrt { x ^ { 2 } - 5 }\)
• B)
• \(f ( x ) = x - \sqrt { 5 }\)
• C)
• \(f ( x ) = x ^ { 2 } - 5\)
• D)
• \(f ( x ) = \sqrt { 5 x ^ { 2 } }\)
• E)
• \(f ( x ) = \sqrt { - 5 x ^ { 2 } }\)

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Definitions:

Interest

The cost of borrowing money or the income earned from lending money, usually calculated as a percentage of the principal amount.

Forward Contract

A bespoke arrangement between two parties for acquiring or disposing of an asset at a designated price on an upcoming date.

Hedge

An investment made to reduce the risk of adverse price movements in an asset.

Speculative Forward Contract

A financial derivative used to speculate on the future price of an asset, involving an agreement to buy or sell the asset at a future date for a price determined today.