The altitude of an airplane that is landing is decreasing at an average rate of 300 feet every 6 seconds. by how many feet does the altitude of the airplane decrease in 1 second?

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?