Question

$f(x)=\sqrt{-18-3x}$how do I find the domain of f(x)?


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Answer 1

Step-by-step explanation:

The value inside the square root must be positive or

$-18 - 3x \geq 0 \Rightarrow -3x \geq 18$

or

$x \leq -6$

So the domain will be for x to be less than or equal to -6.