$f ( x ) = \sqrt { x } ; g ( x ) = x + 9$
Find $( f + g ) ( x )$
A) $( f + g ) ( x ) = 9 \sqrt { x } + x$
B) $( f + g ) ( x ) = x \sqrt { x } + 9$
C) $( f + g ) ( x ) = \sqrt { x } + x + 9$
D) $( f + g ) ( x ) = x \sqrt { x } + x ^ { 2 } + 9 x$

Question

Quizplus · Accepted Answer

To find $(f + g)(x)$, you add the functions $f(x)$ and $g(x)$ together: $\sqrt{x} + (x + 9) = \sqrt{x} + x + 9$.

f(x)=x;g(x)=x+9f ( x ) = \sqrt { x } ; g ( x ) = x + 9f(x)=x​;g(x)=x+9

$f ( x ) = \sqrt { x } ; g ( x ) = x + 9$