Use the Functions $f ( x ) = x + 4$

question 91

Multiple Choice

Use the functions $f ( x ) = x + 4$ and $g ( x ) = 5 x - 7$ to find $( g \circ f ) ^ { - 1 }$ .

• A) \(( g \circ f ) ^ { - 1 } = \frac { 5 x + 11 } { 4 }\)
• B) \(( g \circ f ) ^ { - 1 } = 5 x - 42\)
• C) \(( g \circ f ) ^ { - 1 } = \frac { x - 13 } { 5 }\)
• D) \(( g \circ f ) ^ { - 1 } = \frac { - 7 x - 7 } { 5 }\)
• E) \(( g \circ f ) ^ { - 1 } = 5 x + 13\)

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