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Use the Functions f(x)=1125x5f ( x ) = \frac { 1 } { 125 } x - 5

Question 51

Multiple Choice

Use the functions f(x) =1125x5f ( x ) = \frac { 1 } { 125 } x - 5 and g(x) =x3g ( x ) = x ^ { 3 } to find (fg) 1( f \circ g ) ^ { - 1 } .


A) (fg) 1=x3+55( f \circ g ) ^ { - 1 } = \frac { x ^ { 3 } + 5 } { 5 }
B) (fg) 1=x3625125( f \circ g ) ^ { - 1 } = \frac { x ^ { 3 } - 625 } { 125 }
C) (fg) 1=x+535( f \circ g ) ^ { - 1 } = \frac { \sqrt [ 3 ] { x + 5 } } { 5 }
D) (fg) 1=5x+5( f \circ g ) ^ { - 1 } = 5 x + 5
E) (fg) 1=5x+53( f \circ g ) ^ { - 1 } = 5 \sqrt [ 3 ] { x + 5 }

Correct Answer:

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