To find out how many ounces of spinach Abby should use when she plans to use 8 eggs, we can first establish the ratio of spinach to eggs from the original recipe:
The original recipe uses:
- 12 ounces of spinach for 3 eggs.
Now, we find the amount of spinach needed for 1 egg: \[ \text{Spinach per egg} = \frac{12 \text{ ounces}}{3 \text{ eggs}} = 4 \text{ ounces per egg}. \]
Now that we know there are 4 ounces of spinach per egg, we can calculate the amount of spinach needed for 8 eggs: \[ \text{Spinach for 8 eggs} = 8 \text{ eggs} \times 4 \text{ ounces per egg} = 32 \text{ ounces}. \]
Thus, Abby should use 32 ounces of spinach.
Therefore, the answer is 32.