1. **State the problem:** We have a recipe that requires 8 grams of butter for every 1 gram of flour. 2. **Identify the relationship:** The mass of butter is directly proportional to the mass of flour. 3. **Write the formula:** $$\text{Mass of butter} = 8 \times \text{Mass of flour}$$ 4. **Calculate each value:** - For flour = 1 g, butter = $8 \times 1 = 8$ g (A = 8) - For flour = 2 g, butter = $8 \times 2 = 16$ g (B = 16) - For flour = 3 g, butter = $8 \times 3 = 24$ g (C = 24) - For flour = 4 g, butter = $8 \times 4 = 32$ g (D = 32) 5. **Summary:** The values replacing A, B, C, and D are 8, 16, 24, and 32 respectively. This means for every gram of flour, you multiply by 8 to get the grams of butter needed.