Math 6

Question Analysis
This question tests the understanding of adding a positive number to a negative number, which results in a less negative number.This question tests the understanding of adding and subtracting negative numbers in a real-world context. The key concept is to interpret the descent as a negative value and the ascent as a positive value.

Key Concept Explanation
Descending below sea level can be represented as a negative number, and ascending can be represented as a positive number. The final position is found by adding these values.
Adding a positive number to a negative number on the number line means moving in the positive direction from the position of the negative number.
We subtract the smaller magnitude from the larger magnitude and take the sign of the number with the larger magnitude.

Step-by-step Solution
1. Identify the initial depth: The submarine is at a depth of .
2. Identify the ascent: The submarine ascends

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