Given $f ( x ) = - 3 x + 7$ , find $f ( a + b )$ .
A) $- 3 a + 7 b$
B) $- 3 b + 7 a$
C) $- 3 ( a + b ) + 14$
D) $- 3 ( a + b ) + 7$
E) $- 3 ( a + b ) + 7 ( a + b )$

Name: Given $f ( x ) = - 3 x + 7$ , find $f ( a + b )$ . A) $- 3 a + 7 b$ B) $- 3 b + 7 a$ C) $- 3 ( a + b ) + 14$ D) $- 3 ( a + b ) + 7$ E) $- 3 ( a + b ) + 7 ( a + b )$
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Question

Given $f ( x ) = - 3 x + 7$ , find $f ( a + b )$ . 
A) $- 3 a + 7 b$
B) $- 3 b + 7 a$
C) $- 3 ( a + b ) + 14$
D) $- 3 ( a + b ) + 7$
E) $- 3 ( a + b ) + 7 ( a + b )$

Quizplus · Accepted Answer

To find $f(a + b)$, substitute $a + b$ for $x$ in the function $f(x) = -3x + 7$, resulting in $f(a + b) = -3(a + b) + 7$.

Given f(x)=−3x+7f ( x ) = - 3 x + 7f(x)=−3x+7

Given $f ( x ) = - 3 x + 7$