A utility company charges $0.28 per kilowatt hour of electricity plus a $35 basic connection fee each month. Which function models an electric bill as a function of electricity usage (k)?
A) f(k) = 0.28k + 35
B) f(k) = 0.35k + 28
C) f(k) = 0.28k − 35
D) f(k) = −0.28k + 35
PLEASE HELPP
