Algebra-1

Question Analysis
This question tests the student's ability to identify the independent variable in a given context. The independent variable is the one that is manipulated or controlled, and in this case, it is the number of hours spent studying.

Key Concept Explanation
In a study, the independent variable is the one that is actively changed or controlled by the researcher. It is the "cause" that may lead to changes in the dependent variable, which is the "effect."

Step-by-step Solution
1. Identify the context: The relationship between the number of hours s...