1. The problem states that the cost of plums is proportional to the number of pounds bought, with a constant of proportionality of 2. 2. The formula for proportional relationships is $$\text{Cost} = k \times \text{Amount}$$ where $k$ is the constant of proportionality. 3. Here, $k = 2$, so the cost for $x$ pounds is $$\text{Cost} = 2 \times x$$. 4. The table shows the cost for 1, 2, 3, and 4 pounds as 2, 4, 6, and 8 respectively, which matches the formula. 5. The unit rate is the cost per 1 pound, which is the constant of proportionality $k = 2$. 6. Max says the unit rate is 8, but from the table and formula, the cost for 4 pounds is 8, not the unit rate. 7. Therefore, Max is incorrect; the unit rate is 2, not 8. Final answer: Max is not correct. The unit rate is 2, the cost per pound, not 8.