Final answer:
Eliza and Jamie do not have enough flour for both of their recipes because the total amount of flour they need is greater than the amount they have available.
Step-by-step explanation:
To determine if Eliza and Jamie have enough flour for both of their recipes, we need to add up the amounts of flour each of them needs. Eliza needs 2 1/3 cups of flour, which is equivalent to 7/3 cups of flour. Jamie needs 1 3/4 cups of flour, which is equivalent to 7/4 cups of flour. Adding these amounts together, we get a total of 49/12 cups of flour needed. Since there are 4 cups of flour available, we can see that Eliza and Jamie do not have enough flour for both of their recipes.