Question

Find the domain and range of y = (squareroot) x + 4*
Thanks

Answer 1

domain
if x + 4 is all under the radical then
x+4 >=0 and solve for x
Range
look its graph in the calculator and see all the possible values y can be, Im pretty sure y>=4 but check on that.
Dont have a graphing calculator? Buy one.

Answer 2

if it is
\[y=\sqrt{x+4}\] then the domain is
\[x\geq-4\] and the range is
\[y\geq 0\] because the radical symbol means positive square root