Given f(x) and g(x), find the indicated composition and evaluate.
-$$f ( x ) = 3 x + 9 ; g ( x ) = 6 x + 8$$
Find $( f \circ g ) ( 4 )$.
A) 672
B) 134
C) 53
D) 105

Name: Given f(x) and g(x), find the indicated composition and evaluate. -\[f ( x ) = 3 x + 9 ; g ( x ) = 6 x + 8\] Find $( f \circ g ) ( 4 )$. A) 672 B) 134 C) 53 D) 105
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Question

Quizplus · Accepted Answer

\begin{align*}
(f\circ g)(4)&=f(g(4))\
&=f(6\cdot 4+8)\
&=f(32)\
&=3\cdot 32+9\
&=105
\end{align*}

Therefore, the answer is (D) 105.

Given F(x) and G(x), Find the Indicated Composition and Evaluate f(x)=3x+9;g(x)=6x+8f ( x ) = 3 x + 9 ; g ( x ) = 6 x + 8f(x)=3x+9;g(x)=6x+8

Given F(x) and G(x), Find the Indicated Composition and Evaluate $f ( x ) = 3 x + 9 ; g ( x ) = 6 x + 8$