Answer:
Time taken by the submarine to reach the cave is 10 seconds.
Step-by-step explanation:
We are given that,
The elevation of the underwater cave = -120 feet.
The rate at which the submarine descends to the cave = -12 feet per second
Thus, we have,
The time taken by the submarine to reach the cave = [tex]\frac{-120}{-12}[/tex] = 10 seconds.
Hence, the time taken by the submarine to reach the cave is 10 seconds.