Answer
$(f+g)(x)=6x-7$
$(f+g)(5)=23$
Work Step by Step
$(f+g)(x)=f(x)+g(x)$
$=4x+2+2x-9$
$=6x-7$
Plugin $x=5$ into $6x-7.$
$(f+g)(5)=6\times5-7=30-7=23$
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