Math 6

Question Analysis
This question tests the student's ability to apply integer operations to a real-world scenario, specifically using negative numbers to represent depth below sea level.

Key Concept Explanation
In this context, descending further below sea level is represented by adding a negative number. 
When adding two negative integers, we can think of it as combining two amounts of “debt” or “shortage”.
The rule is to add the magnitudes of the two negative numbers and then attach a negative sign to the sum.
In other words, we are aggregating the “negativeness” of the two values. For example, -a + (-b) = -(a + b)

Step-by-step Solution
1. Identify the initial depth: The submarine is initially at a depth of meters.
2. Identify the additional descent: The submarine descends another 50 meters, which is represented as meters.
3. Add the depths:

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