A Size 8 Dress in Country C Is $f ^ { - 1 } ( x ) = \frac { x - 16 } { 2 }$

question 175

Multiple Choice

A size 8 dress in Country C is size 48 in Country D. A function that converts dress sizes in Country C to those in Country D is f(x) =2( x +16) . Find a formula for the inverse of this function.

• A) \(f ^ { - 1 } ( x ) = \frac { x - 16 } { 2 }\)
• B) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \mathrm { x } - 16\)
• C) \(f ^ { - 1 } ( x ) = \frac { x } { 2 } + 16\)
• D) \(f ^ { - 1 } ( x ) = \frac { x } { 2 } - 16\)

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