Find the specified domain.
-Find the domain of $( f g ) ( x )$ when $f ( x ) = \sqrt { 7 x + 6 }$ and $g ( x ) = \sqrt { 5 x - 9 }$
A) $( - \infty , \infty )$
B) $[ 0 , \infty )$
C) $\left[ - \frac { 9 } { 5 } , \infty \right)$
D) $\left[ \frac { 9 } { 5 } , \infty \right]$

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The Answer of Find the specified domain.
-Find the domain of $( f g ) ( x )$ when $f ( x ) = \sqrt { 7 x + 6 }$ and $g ( x ) = \sqrt { 5 x - 9 }$
A) $( - \infty , \infty )$
B) $[ 0 , \infty )$
C) $\left[ - \frac { 9 } { 5 } , \infty \right)$
D) $\left[ \frac { 9 } { 5 } , \infty \right]$

Find the Specified Domain (fg)(x)( f g ) ( x )(fg)(x)

Find the Specified Domain $( f g ) ( x )$