The cost for burning a 75-watt bulb is given by the function c ( h ) = 0.0045h, where h represents the number of hours that the bulb burns. How much does it cost to burn a 75-watt bulb for 2 hours per night for a 31-day month? Express your answer to the nearest cent.
A. $0.28
B. $0.21
C. $0.27
D. $0.22
E. $0.33
Answer: A
Mathematics
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Mathematics