1. **Problem Statement:** We have a sequence of shapes with a number of tiles depending on $n$. The given values are $n=4, 8, 7, 5$ with corresponding tile counts $4, 8, 7, 5$. We want to find a single expression in terms of $n$ that evaluates the number of tiles for all these shapes at once. 2. **Analyzing the Pattern:** From the data, the number of tiles equals the value of $n$ itself for each shape. This suggests the expression for the number of tiles is simply: $$\text{Number of tiles} = n$$ 3. **Explanation:** Each shape's tile count matches the input $n$ exactly, so the expression is straightforward. 4. **Final Expression:** $$\boxed{n}$$ This expression evaluates the number of tiles for all given values of $n$ simultaneously.