Which of the following behave according to a power model? Select all that apply.

To determine which of the following behave according to a power model, you need to know which mathematical relationship defines a power model and then analyze each item accordingly. A power model represents a relationship between two variables, where one variable is raised to a constant exponent. The general form of a power model equation is y = kx^a, where y and x are variables, k is a constant, and a is the exponent.

Since you haven't provided the list of items to analyze, I can not specifically identify which ones behave according to a power model. However, I can guide you on how to check each item:

1. Identify the dependent variable (y) and the independent variable (x) in each item.
2. Check if the relationship between the variables can be represented by the equation y = kx^a.
3. Determine if the exponent (a) is a constant value, not varying with each data point.
4. If all the above conditions are met, then the item behaves according to a power model.

By following these steps, you can analyze each item and determine which ones behave according to a power model. Please provide the list of items, and I can help you further with the analysis.

To determine which of the following behave according to a power model, it would be helpful to have a list of options to choose from. Please provide the options, and I'll be more than happy to assist you.