Find the domain of $f ( x ) = \sqrt { 7 - x }$ .
A)all real numbers x such that $0 \leq x \leq 7$
B)all real numbers x such that $x \geq 7$
C)all real numbers x such that $x \leq 7$
D)all real numbers x such that $- 7 \leq x \leq 0$
E)all real numbers x such that $- 7 \leq x \leq 7$

Question

Quizplus · Accepted Answer

For the square root function $f(x) = \sqrt{7 - x}$ to be defined, the expression inside the square root, $7 - x$, must be greater than or equal to 0. Solving the inequality $7 - x \geq 0$ gives $x \leq 7$, which means the domain includes all real numbers less than or equal to 7.

Find the Domain Of f(x)=7−xf ( x ) = \sqrt { 7 - x }f(x)=7−x​

Find the Domain Of $f ( x ) = \sqrt { 7 - x }$