Find $( f g ) ( x )$ $$f ( x ) = \sqrt { - 5 x } \quad g ( x ) = \sqrt { - 8 x + 6 }$$

Find $( f g ) ( x )$ .
$$f ( x ) = \sqrt { - 5 x } \quad g ( x ) = \sqrt { - 8 x + 6 }$$

A) $( f g ) ( x ) = 2 x \sqrt { 10 } - \sqrt { 30 x }$
B) $( f g ) ( x ) = 2 x \sqrt { 10 - 30 x }$
C) $( f g ) ( x ) = \sqrt { - 13 x + 6 }$
D) $( f g ) ( x ) = \sqrt { 40 x ^ { 2 } + 6 }$
E) $( f g ) ( x ) = \sqrt { 40 x ^ { 2 } - 30 x }$

Correct Answer:

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