Answer:
All real numbers positive numbers and zero.
Step-by-step explanation:
Domain: set of all possible input values (x-values)
Range: set of all possible output values (y-values)
Given function:
[tex]f(x)=3 \sqrt{x}[/tex]
As the square root of x is undefined for negative real numbers, the domain is positive numbers and zero.
The largest value of the domain is unbounded, so the domain in interval notation is [0, ∞).
