Answer:

Step-by-step explanation:
<u>Step 1: Distribute</u>
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Answer: 
If you divide 128 cookies by 8 trays, you'll get 16.
Therefore, theres 16 cookies baked in each 8 trays.
X=1 & Y=12
X=2 & Y=20
X=3 & Y=30
(16xy + xy) + (4x) + (3y) + (-13 + 21)
17xy + 4x + 3y + 8
Answer: - 1331
Step-by-step explanation:
(-11)(-11)(-11)
(121)(-11)
- 1331