For the given function, find the indicated function value.
-For $f ( x ) = \sqrt { 4 x - 14 }$, find $f ( - 9 )$.
A) $2 \sqrt { 7 }$
B) Does not exist as a real number
C) $3 \sqrt { 13 }$
D) $\sqrt { 15 }$

Question

Quizplus · Accepted Answer

Substituting $x = -9$ into the function $f(x) = \sqrt{4x - 14}$ gives $f(-9) = \sqrt{4(-9) - 14} = \sqrt{-36 - 14} = \sqrt{-50}$, which is not a real number.

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

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