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.

Question

If Maria sells 10 batches of cookies, how much money will she make?

(3 points)
Responses

$170
$170

$130
$130

$150
$150

$145

Answer 1

To find out how much money Maria will make if she sells 10 batches of cookies, we can use the formula for total money earned, which is:

\[ y = 15x \]

where \( y \) is the total amount of money made and \( x \) is the number of batches sold.

If Maria sells 10 batches, we can substitute \( x = 10 \) into the equation:

\[ y = 15 \times 10 = 150 \]

Now, we need to account for the $20 she already spent on baking supplies. Therefore, we will subtract this amount from her total earnings:

Total money made after expenses:

\[ \text{Total profit} = y - \text{expenses} = 150 - 20 = 130 \]

Thus, if Maria sells 10 batches of cookies, she will make $130.

The correct response is:

$130