2 and [tex]\frac{1}{4}[/tex] cups of flour are needed per batch. Marcus wants to make 3 batches.
Simply multiply the amount of cups of flour per batch with the amount of batches you want to make to find how many cups of flour you need.
2 [tex]\frac{1}{4}[/tex] (cups of flour per batch) x 3 (batches) = 6 [tex]\frac{3}{4}[/tex] (cups of flour needed for 3 batches)
Marcus needs 6 [tex]\frac{3}{4}[/tex] cups of flour