Question

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

cost, number of classes
number of classes; average class size
average class size; cost
cost, average class size

Explanation:

In a relationship between two variables, the independent variable is the one that is changed or controlled, and the dependent variable changes in response. Here, the cost of textbooks (dependent variable) changes as the average class size (independent variable) changes.

Answer:

Independent quantity: average class size; Dependent quantity: cost