Final answer:
The rate of growth for the pounds of flour Sally uses every month cannot be determined without additional information. For a pound cake, equal weights of ingredients are required. To measure a bag of flour, the appropriate tool would be a scale.
Step-by-step explanation:
The question appears to be missing vital information that would allow for the calculation of the rate of growth for the pounds of flour Sally uses every month. To determine the rate of growth, we would need to know the starting amount of flour Sally uses and the amount she uses after a certain period. However, using the information provided, we can deduce the proportion of ingredients needed for a pound cake. The pound cake recipe indicates equal weights of sugar, eggs, butter, and flour. Therefore, if Sally has 4 pounds of butter, she would need 4 pounds of flour.
In the context of the chemical reaction, for every 2 grams of hydrogen gas (H₂), she would need 32 grams of oxygen gas (O₂) to produce 36 grams of water, maintaining the stoichiometric ratio according to the balanced equation.
For measuring a bag of flour, the best tool to use would be a scale or a balance, since we are dealing with weight.
If we were to infer the correct statement from the pound cake recipe and the given options, the correct statement would likely be A, since each component must be equal in weight.