An electric company uses time-of-day pricing to encourage cus- tomers to use electricity during times of less demand. From 6 P.M. to midnight, the cost is modeled by E(t)= 600/(1+t^2) cents per kilowatt hour, where 6 (< or =) t (< or =) 12 is measured in hours after noon. How much does it cost to use one kilowatt of electricity over this 6-hour period?
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An electric company uses time-of-day pricing to encourage cus- tomers to use electricity during times of less demand. From 6 P.M. to midnight, the cost is modeled by E(t)= 600/(1+t^2) cents per kilowatt hour, where 6 (< or =) t (< or =) 12 is measured in hours after noon. How much does it cost to use one kilowatt of electricity over this 6-hour period?
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