Answer:
Step-by-step explanation:
The term "for every" is a ratio indicator, meaning that every single time you use or do one thing then you must also do or use another thing. In this scenario, it is stating that every single time that you add a single cup of butter to the cookie recipe then you must also add three cups of flower to that recipe. This ratio always maintains its proportions meaning that if you add 2 cups of butter to the recipe you would need to add six cups of flower.
