Final answer:
Mrs. Nancy will be able to make 10.125 sheets of banana nut bread.
Step-by-step explanation:
To find the number of sheets of banana nut bread Mrs. Nancy can make, we need to divide the total amount of walnuts she has by the amount required for one sheet of bread. Mrs. Nancy has 9*3/4 cups of walnuts, which is equal to 9 x (3/4) = 6.75 cups of walnuts. One sheet of bread requires 2/3 cups of walnuts, so the number of sheets of bread Mrs. Nancy can make is 6.75 / (2/3) = 6.75 x (3/2) = 10.125 sheets.