Question
Maria is organizing a charity bake sale. She has already spent $20 on baking supplies and plans to sell each batch of cookies for $15. Let x represent the number of batches of cookies Maria sells, and let y represent the total amount of money she makes from selling the cookies.
If Maria sells 10 batches of cookies, how much money will she make?
(3 points)
Responses
$130
$130
$170
$170
$150
$150
$145
If Maria sells 10 batches of cookies, how much money will she make?
(3 points)
Responses
$130
$130
$170
$170
$150
$150
$145
Answers
GPT-4o mini
To calculate the total amount of money Maria makes from selling cookies, we can use the formula:
\[ y = 15x - 20 \]
where \( y \) is the total amount of money she makes, \( x \) is the number of batches sold, and she has already spent $20 on baking supplies.
If Maria sells 10 batches of cookies, we substitute \( x = 10 \):
\[ y = 15(10) - 20 \]
\[ y = 150 - 20 \]
\[ y = 130 \]
So, if Maria sells 10 batches of cookies, she will make **$130**.
The correct response is **$130**.
\[ y = 15x - 20 \]
where \( y \) is the total amount of money she makes, \( x \) is the number of batches sold, and she has already spent $20 on baking supplies.
If Maria sells 10 batches of cookies, we substitute \( x = 10 \):
\[ y = 15(10) - 20 \]
\[ y = 150 - 20 \]
\[ y = 130 \]
So, if Maria sells 10 batches of cookies, she will make **$130**.
The correct response is **$130**.