Let $f ( x ) = 3 x - 4$ And $g ( x ) = x ^ { 2 } - 1$

Multiple Choice

Let $f ( x ) = 3 x - 4$ and $g ( x ) = x ^ { 2 } - 1$ . Find: $( f \circ g ) ( x )$

A) $3 x ^ { 2 } - 5$
B) $3 x ^ { 2 } - 7$
C) $9 x ^ { 2 } - 24 x + 15$
D) $3 x ^ { 2 } - 3$