Find the requested function value.
-Find $( f \circ g ) ( 9 )$ when $f ( x ) = 8 x - 5$ and $g ( x ) = 3 x ^ { 2 } - 5 x + 9$.
A) 13,141
B) $- 125$
C) 1651
D) $- 77$

Question

Quizplus · Accepted Answer

To find $( f \circ g ) ( 9 )$, first find $g(9)$, then apply $f$ to that result. $g(9) = 3(9)^2 - 5(9) + 9 = 243 - 45 + 9 = 207$. Then, $f(207) = 8(207) - 5 = 1656 - 5 = 1651$.

Find the Requested Function Value (f∘g)(9)( f \circ g ) ( 9 )(f∘g)(9)

Find the Requested Function Value $( f \circ g ) ( 9 )$