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) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } } { 38 }\)

---

Definitions:

Savings Account

A bank account that earns interest and is typically used for holding money that is not intended for daily expenses.

Accumulated Amount

The total sum including the principal and the compounded interest over a period.

End-Of-Quarter Payments

Payments that are made at the conclusion of a fiscal quarter, often related to financial obligations such as loans or leases.

Annuity

A fiscal product designed to disburse a static sequence of payments to someone, chiefly utilized as a means for generating income during retirement.