Simplify $\left(s^{-2}\right)^7$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $-2$ and $n$ equals $7$

Simplify $\left(s^7\right)^2$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $7$ and $n$ equals $2$

Simplify $\left(8^{-3}\right)^{-3}$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $-3$ and $n$ equals $-3$