To represent the submarine's position relative to the surface after 6 minutes, we can use the following expression:
\[ \text{Position} = \text{Rate} \times \text{Time} \]
Where:
- Rate is 50 meters per minute (the submarine descends).
- Time is 6 minutes.
So, the expression to calculate the position is:
\[ \text{Position} = 50 , \text{meters/minute} \times 6 , \text{minutes} = 300 , \text{meters} \]
Therefore, after 6 minutes, the submarine is 300 meters below the surface.
Now, converting 300 meters to feet (using the conversion factor 1 meter = approximately 3.28084 feet):
\[ 300 , \text{meters} \times 3.28084 , \text{feet/meter} \approx 984.25 , \text{feet} \]
Thus, the submarine's position relative to the surface after 6 minutes is approximately 984 feet below sea level.