Idon't understand and how do i do it

Ok so she has 3 small containers holding 8 pounds of birds seeds and 6 large containers of bird seed that each hold 12 pounds of bird seed, and she has already used 4 pounds so lets find how many pounds of bird seed she has altogether 8*3=24 6*12=72 and adding the leftover 24+72-4=92 now she wants to fill 30 bird feeders needing 2 pounds each, would require 60 pounds of bird seed now that she used 60 more pounds of seed 92-60=32 she would have 32 pounds of bird seed leftover now an equation to use to solve this is (3(8))+(6(12))-4-(30(2))=the amount of bird seed left over hopefully this gave you an idea on how to do this the way you are supposed to 

Where is the rest of the question