Im not really sure if it's correct or not.. but i think it is..
r = recycling and reuse
w= waste management
equation: 1275000 =r+w
r = 1025000
1275000 = 1025000+w
-1025000 -1025000
250000 = w
r = 1025000
w = 250000
If 4 kids cut the pizza evenly and one kid ate her slice, I think 7 pieces (if they cut it to 8 pieces)
But the answer would depend on how many slices they cut the pizza into.
I think it is correlation