Problem

Electric Charges For the nonextreme weather months, Palmetto Electric charges $7.10 plus 6...

Electric Charges For the nonextreme weather months, Palmetto Electric charges $7.10 plus 6.747 cents per kilowatt-hour (kWh) for customers using up to 1200 kWh, and charges $88.06 plus 5.788 cents per kWh above 1200 for customers using more than 1200 kWh.

a. Write the function that gives the monthly charge in dollars as a function of the kilowatt-hours used.


b. What is the monthly charge if 960 kWh are used?


c. What is the monthly charge if 1580 kWh are used?

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