MATH HELP ALGEBRA!?
An electric utility charges residential customers a $6 monthly fee plus $0.04 per kilowatt hour for the first 500 kWh and $0.08/kWh for usage over 500kWh.
a) Write a piecewise function f(x) that can be used to determine a customer's monthly bill for using x kWh of electricity.
b) A customer uses 613 kWh of electricity in one month. How much should the utility charge the customer? Explain how you determined your answer.