An electric utility company determines the monthly bill by charging 85.4 cents per​ kilowatt-hour (kWh) used plus a base charge of ​$17.55 per month.​ Thus, the monthly charge is given by the function f(W)=0.854W+17.55 ​dollars, where W is the number of​ kilowatt-hours.   a. Find f ​(6000​) and explain what it means. b. What is the monthly charge if 9500 kWh are​ used?

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.