3 questions I need help please

1.  f(x)  =   ³√x   +  2

We can put in any real number for x.....so the domain  is just  (-inf, inf)

And any real  number can be generated from the function

So.....the range is also   (-inf, inf)

Here's the graph  :  https://www.desmos.com/calculator/sd0menwuyg

2.  f(x)  =  2 √x

Note that we cannot put any negative values in the square root  [ this generates a non-real number ]

So  the domain is   [ 0, inf )

And  out of a positive square root, we can never get any  negative values

So.....the range is the same   [0, inf )

Here's a graph : https://www.desmos.com/calculator/hndidezpmc

3.   f(x)  =  ³√x      ⇒   f(x)  =  -2³√x  -  1

The  "-"  out front reflects the  graph across the x axis

The "2"  "vertically stretches " the graph away from the x axis

The  "-1"  at the end shifts the graph down 1 unit