Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Suppose that your electric company charges you once per year for the electricity you use. Suppose the electric company charges you $0.06 per kilowatt-hour for the first 1000 kilowatt hours you use and $0.08 per kilowatt-hour for all kilowatt-hours more than 1000 that you use.
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