Evaluate the function at the given value of the independent variable and simplify.
-$f ( x ) = \sqrt { x + 20 } ; \quad f ( - 4 )$
A) 4
B) $- 4$
C) 2
D) not a real number

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The Answer of Evaluate the function at the given value of the independent variable and simplify.
-$f ( x ) = \sqrt { x + 20 } ; \quad f ( - 4 )$
A) 4
B) $- 4$
C) 2
D) not a real number

Evaluate the Function at the Given Value of the Independent f(x)=x+20;f(−4)f ( x ) = \sqrt { x + 20 } ; \quad f ( - 4 )f(x)=x+20​;f(−4)

Evaluate the Function at the Given Value of the Independent $f ( x ) = \sqrt { x + 20 } ; \quad f ( - 4 )$