Kobe takes art classes.



He pays a one-time materials fee of $45.

He pays $9 for each art class he takes.

Which equation describes the relationship between the number of art classes, *x*, Kobe takes and the total number of dollars, *y*, he pa

To describe the relationship between the number of art classes $ x $ Kobe takes and the total amount of money $ y $ he pays, we can use a linear equation.

Given:
- A one-time materials fee of $45 (this is a fixed cost).
- $9 for each art class Kobe takes (this is a variable cost depending on the number of classes).

The total cost $ y $ can be expressed as:

\[
y = 9x + 45
\]

Here:
- $ y $ represents the total amount of money Kobe pays.
- $ x $ represents the number of art classes Kobe takes.
- $ 9x $ is the total cost for the art classes.
- $ 45 $ is the one-time materials fee.

This equation correctly describes the relationship between the number of art classes and the total amount Kobe pays.

Would you like more details or have any questions?

### Related Questions:
1. How much will Kobe pay if he takes 10 art classes?
2. What is the total cost if Kobe decides to take no art classes?
3. How many classes can Kobe take if he has a budget of $90 (excluding the materials fee)?
4. What would the equation look like if the cost per class increased to $12?
5. How can the equation be rearranged to solve for the number of classes $ x $?

**Tip:** When dealing with linear equations, always identify the fixed and variable costs to set up the equation correctly.

Explore how to calculate the total cost of art classes using a linear equation. This problem involves determining the relationship between the number of art classes taken and the total amount paid by Kobe, including fixed and variable costs. Suitable for students in Grades 7-9.

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