Let $f ( x ) = 3 x - 5$ And $g ( x ) = x ^ { 2 } - 3$

Multiple Choice

Let $f ( x ) = 3 x - 5$ and $g ( x ) = x ^ { 2 } - 3$ . Find: f . g

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