A. C(t) represents the total cost of the water bill in dollars after running the water for t hours.
B. t = 5 represents the amount of time, in hours, that the water has been running.
C. C(5) means finding the total cost of the water bill after running the water for 5 hours.
D. Finding C(-2) does not make sense in the context of this problem because time cannot be negative and the function c(t) is not defined for negative values of t.
The following function gives the total cost of a water bill dependent on the amount of time (t) in hours that the water runs.
c(t)=4(0.21)^t
A. What does C(t) represent in the context of this problem?
B. What does t = 5 represent in the context of this problem?
C. What does C(5) mean in the context of this problem?
D. Does finding C(-2) make sense in the context of this problem?
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