Saving Fuel? Which Change In Flight Procedure Would Save The Most Fuel?

In order to save fuel, an airline executive recommended the following changes in the airline’s largest jet flights:
A. Restrict the weight of personal luggage
B. Remove pillows, blankets, and magazines from the cabin
C. Lower the flight altitude by 5 percent
D. Reduce flying speeds by 5 percent
Using physics principles, explain why each of those changes would result in decreased fuel consumption? Research the information necessary to calculate and approximate the appropriate values. Which change in flight procedure would save the most fuel?

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