Math 6

Question Analysis
This question tests the application of integer operations in a real-world context, specifically the addition of negative numbers.

Key Concept Explanation
The problem involves adding two negative numbers, which is equivalent to adding their absolute values and keeping the negative sign.When adding two negative numbers, we can think of it as moving further in the negative direction on the number line.
We are essentially combining the magnitudes of the negative numbers and keeping the negative sign.

Step-by-step Solution
1. Identify the initial depth: The submarine is initially at -200 meters.
2. Identify the additional descent: The submarine descends another -150 meters.
3. Add the depths:

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