Let's analyze the question to identify the independent and dependent quantities.
In the context of the problem, we are given that water pressure increases by 0.44 pounds per square inch (psi) for each foot of depth below sea level.
1. Understanding Independent and Dependent Quantities:
- The independent quantity is the variable that can be controlled or changed directly in an experiment or situation.
- The dependent quantity is the variable that changes in response to the independent variable.
2. Analyzing the Situation:
- Depth: This can be adjusted or measured at different levels (e.g., 10 feet, 20 feet below sea level).
- Water Pressure: This changes based on the depth.
Thus, in this situation:
- The depth can be varied or controlled; it is the independent quantity.
- The water pressure changes as a result of changes in depth; it is the dependent quantity.
Therefore, the independent quantity is the depth, and the dependent quantity is the water pressure.
The correct pairs from the given options are identified as follows:
Answer:
C. depth; water pressure
