For the Given Function, Find the Indicated Function Value $f ( x ) = \sqrt { 4 x - 14 }$

For the given function, find the indicated function value.
-For $f ( x ) = \sqrt { 4 x - 14 }$ , find $f ( 7 )$ .

A) $\sqrt { 13 }$
B) $2 \sqrt { 13 }$
C) $\sqrt { 14 }$
D) $\sqrt { 15 }$