To determine the linear equation that represents the total amount of money Maria makes, we need to consider both her costs and her revenue from selling the cookies.
Given:
- The cost spent on baking supplies is $20, which is a fixed cost.
- Maria sells each batch of cookies for $15, and if she sells \( x \) batches, the revenue from selling those batches is \( 15x \).
To find the total amount of money \( y \) she makes after accounting for her expenses, we can express it as:
\[ y = 15x - 20 \]
Here, \( y \) is the total amount of money Maria makes, \( 15x \) is the revenue from selling \( x \) batches of cookies, and \( -20 \) represents her initial expenses.
So the linear equation that represents the total amount of money Maria makes is:
\[ y = 15x - 20 \]
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