A.) you take the number r of servings and divide it by the number of cups of flour which would be 0.25 cups of flour or 1/4 cups of flour per serving
B.) You add 0.75 (amount of white sugar) and add 0.33 (amount of brown sugar) which is 1.08 then divide it by 6 and you will get 0.18 cups per serving
C.) You take the initial amount of cups you got from part A and multiply it by because the number of servings doesn't change the amount you use per serving and you would get 2 and 1/4 cups of flour for the 9 servings.
I hope this is helpful if not oof.