Question

A scientist uses a submarine to study ocean life.

Answer 1

Answer:

31.3 feet

Step-by-step explanation:

-23.6+13.4 = -10.2

-10.2 - 21.1 = -31.3

Answer 2

Answer:

31.3 feet

Step-by-step explanation:

0 -23.6 + 13.4 - 21.1 = -31.3

So to get back to sea level she must ascend 31.3 feet.