Suppose that the functions $u$ and $w$ are defined as follows.
\[
\begin{array}{l}
u(x)=-x+2 \\
w(x)=3 x-4
\end{array}
\]
Find the following.
\[
\begin{array}{l}
(w \circ u)(-4)= \\
(u \circ w)(-4)=
\end{array}
\]

Step 1 ：Let's first find the value of the function \(u(x)\) at \(x=-4\). So, \(u(-4) = -(-4) + 2 = 6\).

Step 2 ：Next, we substitute this value into the function \(w(x)\) to find \((w \circ u)(-4)\). So, \((w \circ u)(-4) = w(u(-4)) = w(6) = 3*6 - 4 = 14\).

Step 3 ：Now, let's find the value of the function \(w(x)\) at \(x=-4\). So, \(w(-4) = 3*(-4) - 4 = -16\).

Step 4 ：Next, we substitute this value into the function \(u(x)\) to find \((u \circ w)(-4)\). So, \((u \circ w)(-4) = u(w(-4)) = u(-16) = -(-16) + 2 = 18\).

Step 5 ：So, the final answers are \((w \circ u)(-4) = \boxed{14}\) and \((u \circ w)(-4) = \boxed{18}\).