Find a Formula for the Inverse of the Function Described $C$

question 353

Multiple Choice

Find a formula for the inverse of the function described below.
-A size 4 dress in Country $C$ is size 42 in Country D. A function that converts dress sizes in Country $C$ to those in Country $D$ is $f ( x ) = x + 38$ .

• A) \(f ^ { - 1 } ( x ) = x - 38\)
• B) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } } { - 38 }\)
• C) \(f ^ { - 1 } ( x ) = x + 38\)
• D) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } } { 38 }\)

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Definitions:

Interest Rate Parity

An economic theory that suggests the difference in interest rates between two countries will be equal to the difference in exchange rates between their currencies.

Interest Rate Differential

The difference in interest rates between two distinct economic regions or financial instruments, often influencing currency values and investment flows.

Forward Exchange Rate

The rate agreed upon today for the exchange of two currencies at a specified future date.

Canadian Dollars

Canada's official monetary unit, identified by the symbols CAD or C$, which is utilized for every financial dealing across the nation.