An electric company charges $11.60 per month plus $0.24 per kilowatt-hour (kWh) for the first 350 kWh used per month and $0.17 per kWh for anything over 350 kWh used.
a. How much is owed for using 280 kWh per month?
b. How much is owed for using 370 kWh per month?
c. Write a piecewise function, C(x), where C is the cost charged per month as a function of the monthly kilowatt-hours used, x.
d. Sketch the piecewise function.
a. What is the charge for using 280 kWh in a month?
C=$
(Simplify your answer. Type an integer or a decimal.)
b. What is the charge for using 370 kWh in a month?
C = $ ☐
(Simplify your answer. Type an integer or a decimal.)
c. Construct a function that relates the monthly charge C for x kWh of electricity.
C =
for 0≤x≤350
for x > 350
(Simplify your answer. Use integers or decimals for any numbers in the expression.)
d. Graph this function. Choose the graph which best represents the function.