Write the following as a radical expression. \( z^{\frac{1}{5}} \)

(c) \( 125-k^{16}=(\quad)( \) (d) \( y^{9}+8=(\quad)( \) (e) \( x^{3}+8 y^{3}=(\quad)( \) (f) \( 1000 x^{3}-343=(\quad) \)

b) \( \left\{\begin{array}{l}x-7 y=-2 \\ 3 x+2 y=17\end{array}\right. \)

Follow the given steps to solve for \( y \). Step 1: Move the \( x \) term to the other side by performing the opposite operation to BOTH sides. \( \begin{aligned}-7 x+y=-17 \\ +7 x\end{aligned} \) \( +[?] x \)

1) \( 1 x+3=5 \)

Follow the given steps to solve for \( y \). Step 2: Isolate \( y \) by performing the opposite operation to ALL terms. \[ \begin{array}{r}2 y-4 x=10 \\ +4 x+4 x\end{array} \] \( \frac{\frac{2 y}{2}=\frac{4 x}{[?]}+\frac{10}{\square}}{} \)