Which equation would help determine the cost of 2 rubber stamps? Choose 1 answer: (A) \( \frac{2}{x}=\frac{\$ 10.30}{10} \) (B) \( \frac{x}{2}=\frac{10}{\$ 10.30} \) (C) \( \frac{2}{10}=\frac{\$ 10.30}{x} \) (D) \( \frac{2}{\$ 10.30}=\frac{x}{10} \)

To determine the cost of **2 rubber stamps**, let's analyze the given options and identify which equation correctly sets up the relationship between the number of stamps and their cost. ### Given: - **10 stamps cost \$10.30** Let: - **\( x \)** be the cost of **2 stamps**. ### Proportional Relationship: Since the cost is directly proportional to the number of stamps, we can set up the proportion as: \[ \frac{\text{Cost of 2 stamps}}{\text{Number of stamps}} = \frac{\text{Cost of 10 stamps}}{\text{Number of stamps}} \] \[ \frac{x}{2} = \frac{10.30}{10} \] This simplifies to: \[ \frac{x}{2} = \frac{10}{10.30} \] ### Matching the Options: - **Option (B)** exactly matches this setup: \[ \frac{x}{2} = \frac{10}{\$10.30} \] ### Solving for \( x \): \[ x = 2 \times \frac{10}{10.30} \approx \$1.94 \] Therefore, **Option (B)** correctly represents the equation needed to determine the cost of 2 rubber stamps. **Answer:** **\(\boxed{\text{B}}\)**