To determine who correctly used the Power Rule of Exponents to create an equivalent expression for \( (15^3)^9 \), we first apply the Power Rule, which states that \( (a^m)^n = a^{m \cdot n} \).
Here, we can simplify \( (15^3)^9 \) as follows:
\[ (15^3)^9 = 15^{3 \cdot 9} = 15^{27} \]
Now, let's look at the expressions given by Amy, Lin, and Miguel:
- Amy has \( 15^{27} \), which is correctly calculated as \( 1527 \).
- Miguel has \( 15^{12} \), which is incorrect.
- Lin has \( 15^3 \), which is also incorrect.
Based on this analysis, the only correct expression is by Amy, who has provided \( 1527 \).
Therefore, the correct response is:
Amy