Answer:
With 3 3/8 cups of sugar Haley can make one and a half pie.
Explanation:
The amount of sugar required to make each pie = 2 1/4 cup
Now,

So, Haley uses 2.25 cup of sugar foe each pie.
Total cups of Sugar Haley has = 3 3/8 cups.
Now,

So, the total amount of sugar Haley has is 3.375 cups.
Now,

=

or the number of pies she can make = 1.5
Hence, with 3 3/8 cups of sugar Haley can Make 1 1/2 pie.