It looks like you have a mathematical function expressed in a specific format. The function \( v(x) \) can be written as:
\[ v(x) = 10,800 \cdot (0.9)^x \]
This function represents a decreasing exponential function where \( 10,800 \) is the initial value and \( 0.9 \) is the base that indicates a decay factor.
If you have any specific questions about this function, such as finding its value for a particular \( x \), determining its properties, or anything else, please let me know!