I need the domain to this.

all real numbers greater than zero

Step-by-step explanation:

The square root of a number must be greater than or equal to zero

sqrt(x) ≥0

Squaring each side

x ≥0

This means the domain is all real numbers greater than or equal to zero

I would go with all real numbers greater than zero since it is the closest answer

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .