The expression you provided seems to have some formatting issues, but I will interpret it as follows:
The original expression appears to be \( r \cdot (18 - 3) \). This expression simplifies to:
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Calculate \( 18 - 3 \): \( 18 - 3 = 15 \).
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So, the expression becomes: \( r \cdot 15 \) or simply \( 15r \).
If the options provided (A, B, C, D) are intended as possible representations of the original expression, we can rewrite \( r \cdot (18 - 3) \) in a different way, leading to possible candidates like \( 15r \) depending on what forms are allowed.
If you could clarify or provide the options more clearly, I could help identify the correct representation among them.