To determine the water level, \( w \), of the dam last month, we understand that the current water level is 95.3 meters and it decreased by 8.8 meters last month. We can express this with the following equation:
\[ w - 8.8 = 95.3 \]
This equation indicates that the water level last month \( w \) minus the decrease of 8.8 meters equals the current water level of 95.3 meters.
Now, let's solve for \( w \):
\[ w = 95.3 + 8.8 \] \[ w = 104.1 \]
So, the water level of the dam last month was 104.1 meters.
Thus, the correct representation is:
Equation: \( w - 8.8 = 95.3 \)
Water Level Last Month: 104.1 meters