Hi Alex,

E(x)=10+.06x for 0<x<1200 kWH

E(x)=82+.07x for x>1200 KWH

This makes E(x) a piecewise continuous function of usage

Jim

Alex S.

asked • 01/14/15An electricity company charges its customers a base rate of $10 a month, plus 6 cents per kilowatt-hour(kWh) for the first 1200kWh and 7 cents per kWh for all usage over 1200 kWh. Express the monthly cost E as a function of the amount x of electricity used.

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Hi Alex,

E(x)=10+.06x for 0<x<1200 kWH

E(x)=82+.07x for x>1200 KWH

This makes E(x) a piecewise continuous function of usage

Jim

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