Final answer:
The volume of the Lopezes' refrigerator is greater than the volume of the Hawks' refrigerator.
Step-by-step explanation:
The volume of the Hawks' refrigerator is 30 × 68 × 28.5 cubic inches. The volume of the Lopezes' refrigerator is (30 × 68 × 28.5) + 16 cubic inches. Without doing any calculations, it can be concluded that the volume of the Lopezes' refrigerator is greater than the volume of the Hawks' refrigerator.