1. The expression $81^2$ can be written in the form $3^x$. Find the value of $x$. ___
2. Express $16^4$ in the form $2^n$. The value of $n$ is ___.
3. Are the expressions $8^3$ and $2^8$ equivalent?
4. The expression $125^3$ is equivalent to $5^y$. What is the value of $y$? ___
5. Rewrite the expression $(4^a)^3$ in the form $2^k$. The exponent $k$ is ___. Enter your answer in terms of $a$.
6. Determine if the expressions $49^4$ and $7^8$ are equivalent.
7. The expression $1000^5$ can be written as $10^z$. Find the value of $z$. ___
8. Compute the power: $(\frac{2}{3})^4 = $ ___.
9. One of the two statements is true for all values of $x$. Which statement is true?
10. Translate "25% of the cube of $h$" into an algebraic expression. The expression is ___.