Question

The cost of textbooks for a school increases with the average class size. Identify the independent and dependent quantity in the situation.


number of classes; average class size


average class size; cost


cost; number of classes


cost; average class size

Answer 1

In the situation described, the average class size is likely influencing the cost of textbooks. Therefore:

- The independent quantity is the **average class size** (as this is what you can change or control).
- The dependent quantity is the **cost of textbooks** (as this depends on the average class size).

So the correct identification is:

**average class size; cost**.