Electricity rates. Table 1 shows the electricity rates charged by Monroe Utilities in the summer months. The base is a fixed monthly charge, independent of the kWh (kilowatt–hours) used during the month.
(A) Write a piecewise definition of the monthly charge S(x) for a customer who uses x kWh in a summer month.
(B) Graph S(x).
Table 1 Summer (July–October)
Base charge, $8.50
First 700 kWh or less at 0.0650/kWh
Over 700 kWh at 0.0900/kWh
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