Final answer:
The final weight on the pallet after reducing each machine's weight by 2 pounds is found by multiplying the new weight of each machine (5 pounds) with the number of machines (384), giving a total of 1920 pounds.
Step-by-step explanation:
The question asks for an expression for the final weight on a pallet after reducing the weight of each machine by replacing the metal casing with a plastic one. Each machine originally weighs 7 pounds, and the reduction in weight is 2 pounds per machine. Initially, 384 machines are packaged on one pallet, and we must calculate their new total weight after the modification.
To find the final weight, we take the original weight of each machine (7 pounds) and subtract the amount reduced by the casing swap (2 pounds). This gives us the new weight of each machine, which is 5 pounds (7 - 2 = 5). To find the total weight, we multiply the number of machines by this new weight: 384 machines × 5 pounds/machine = 1920 pounds. Therefore, the expression for the final weight on the pallet is 1920 pounds.