An electric company charges $8.00 per month plus 11 cents for each kilowatt hour (kwh) of electricity used. Find a linear function that gives the total cost of n kwh of electricity.
?
A. f (n) = 0.11n
B. f (n) = 1.11n + 8.00
C. f (n) = n + 8.00
D. f (n) = 0.11n + 8.00
E. f (n) = 0.085n + 9.00
Answer: D
Mathematics
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