Function given, find values of x if...

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The discussion focuses on solving the function f(x) = 3√(x + 4) under the conditions x ≥ -4 and y ≥ 0. To find the values of x for which f(x) ≥ 4, participants suggest substituting f(x) with 4 and solving the resulting equation. The hint provided indicates starting with the equation x + 4 = 16/9, which leads to determining the specific values of x that satisfy the original function's constraints.

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f(x)=3\sqrt{x+4} & x\ge-4;y\ge0

then if f(x)\ge4 find the values of x

Do I then ignore x\ge-4;y\ge0 and replace f(x) with 4 ?

How would I go about solving this?
 
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Hint: start with $$x+4=\dfrac{16}{9}$$

*Note: for LaTeX to render correctly here enclose your code in [math]...[/math] tags.
You may also use $$...$$. Use $...$ for inline code.
 
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