To solve this question, let's analyze the scenario:

Juan earns $20 per hour at his job. The problem asks for the best type of function to model how much he will make based on the number of hours he works.

• Since his earnings increase by a constant rate of $20 for each additional hour he works, this relationship between hours worked and total earnings is linear.
• A linear function has the form $y = mx + b$, where $m$ is the constant rate of change (in this case, $20 per hour) and $b$ is the starting amount (which is $0 if he starts with no money earned initially).

So, the correct answer is:

• A linear function

Let me know if you want further details or have questions.

Here are 5 additional related questions:

1. How would the function change if Juan’s hourly wage increased over time?
2. What would the equation look like if Juan had a starting bonus of $50?
3. How would you model Juan’s earnings if his pay rate doubled every hour?
4. How can you determine if a real-life scenario fits a linear function?
5. What does the slope of a linear function represent in practical terms?

Tip: In general, if the change in a quantity is constant over time, a linear function is often the best model.