The function below shows how Alison's monthly electric bill depends on the amount of electricity she uses.
f(x) = 0.25x + 6
In this equation, x = the number of kilowatt-hours of electricity used and f(x) = the monthly bill in dollars. Which statement describes this situation?
A.Electricity costs $6 per month plus $0.25 per kilowatt-hour used.
B.Electricity costs $6 per month plus $25 per kilowatt-hour used.
C.Electricity costs $0.25 per month plus $6 per kilowatt-hour used.
D.Electricity costs $25 per month plus $6 per kilowatt-hour used.
