## Functions Modeling Change: A Preparation for Calculus, 5th Edition

To find $f(-x)$, replace $x$ with $-x$ in $f(x)$ to get $$f(-x)=(-x)^2+2(-x)+7=x^2-2x+7$$ However, $x^2-2x+7 = f(-x) \ne f(x)$. Therefore, the statement is false.