SOLUTION: Solve the problem. An electric company has the following rate schedule for electricity usage in single-family residences: The monthly service charge $4.93 Per kilowa

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Question 1176448: Solve the problem.
An electric company has the following rate schedule for electricity usage in single-family residences:

The monthly service charge $4.93

Per kilowatt service charge
1st 300 kilowatts $0.11589/kW
Over 300 kilowatts $0.13321/kW
What is the charge for using 300 kilowatts in one month?
What is the charge for using 375 kilowatts in one month?
Construct a function that gives the monthly charge C for x kilowatts of electricity.





Found 2 solutions by MathLover1, Solver92311:
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

The monthly service charge $ -> constant
Per kilowatt service charge
1st kilowatts $ plus $



Over kilowatts $



What is the charge for using kilowatts in one month?





What is the charge for using kilowatts in one month?





Answer by Solver92311(821)   (Show Source): You can put this solution on YOUR website!


You need a piece-wise function: 
        |  0.11589x + 4.93   if  x ≤ 300
C(x) =  |
        |  0.13321(x - 300) + 39.697 if x > 300


Rounded to the nearest $0.01.




John

My calculator said it, I believe it, that settles it

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