is the answer B if not what is the answer and how is that the answer.Valerie makes and sells bracelets in order to make the bracelets, first she has to buy the materials. the table shows the number of bracelets sold and her profit.

Answer:
The cost of material is equal to $30
[tex]\text{ \$30}[/tex]Explanation:
From the given question, Valerie first has to buy materials before she can make and sell bracelets.
[tex]\text{Profit}=\text{ cost of bracelet sold - cost of materials bought}[/tex]In this question we will assume that the same amount of materials was purchased for each case on the table.
When the number of bracelet sold is zero, the cost of bracelet sold will be zero.
So,
[tex]\begin{gathered} \text{Profit = 0 - cost of materials bought} \\ \text{Profit = -1 }\times\cos t\text{ of materials bought} \\ \cos t\text{ of material = -1}\times profit \end{gathered}[/tex]From the table, at number of bracelet sold = 0, the profit is -$30;
[tex]\begin{gathered} \text{ cost of materials = -1 }\times-\text{\$30} \\ \cos t\text{ of material = \$30} \end{gathered}[/tex]Therefore, the cost of material is equal to $30
[tex]\text{ \$30}[/tex]