\[y = \sqrt{x + 1} + 2\]
\[x + 1 \geq 0\]
\[x \geq - 1.\]
\[D(y) = x \in \lbrack - 1; + \infty).\]
\[y \geq 2\]
\[E(y) = y \in \lbrack 2; + \infty).\]