Answer:

No. You need 4 cups of flour and 2 cups of sugar. You have more than enough sugar, but not enough flour, so you can't follow the recipe.

Both Items Needed

The question about whether you have enough supplies has two parts:

You need at least 4 cups of flour   AND   You need at least 2 cups of sugar

Since you do not have enough flour, you don't have enough supplies.

QUESTION 2:

What if you had 9 cups of flour and 1 cup of sugar. Now could you follow the recipe?