Answer: Combination 2,3,4 (going down)
Explanation:
These are the equations
1. 3.97(5)+5.25=25.1 this is (10 cents over cant buy)
2. 2.75(7)+2.4(2)= 24.05 (good)
3. 5.25(2)+2.4(6)= 24.9 (good)
4. 3.97(3)+2.75(4)= 22.91 (good)
5. 5.25(2)+2.75(6)= 27 (two dollars over cant buy)