Algebra-1

Question Analysis
This question tests the understanding of the relationship between independent and dependent variables in a given context.

Key Concept Explanation
In a study, the independent variable is the one that is controlled or manipulated, while the dependent variable is the one that is observed or measured. Here, the amount of time spent studying (independent variable) is expected to affect the test scores (dependent variable).

Step-by-step Solution
1. Identify the independent variable: the amount of time spent st...