Answer:
275 feet below sea level
Step-by-step explanation:
The distance of submarine from sea level= -125 feet
The submarine makes 3 dives of 50 feet
Total distance covered in 3 dives= 3×(-50 )= - 150 feet
We have to find the total distance after 3 dives of submarines
The total distance of submarine from sea level= -125-150
The total distance of submarine from sea level= -275 feet
The submarine is at 275 feet below sea level
Hence, the correct answer is 275 feet below sea level.