Question

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)=3(0.24)

1. What does C(t) represent in the context of this problem?
a. The price per cubic unit of water used
b. The cost of the water bill given a certain amount of time the water has been running
c. How long the water has been running
d. The cost
e. The cost being multiplied to time

2. What does t = 7 represent in the context of this problem?
a. The time being that the water has been running for 7 hours
b. The time used to determine the cost
c. 7
d. The cost

3. What does C(7) mean in the context of this problem?
a. The cost being multiplied to 7
b. The water has been running for 7 hours
c. The total water bill after the water has been running for 7 hours
d. The cost

4. Does finding C(-4) make sense in the context of this problem?
a. No, it does not make sense to multiply the cost to -3
b. Yes, in context the cost can be determined by this
c. No, it does not make sense as we cannot have negative time
d. Yes, we can solve for C(-3)
d.

Answer 1

c. No, it does not make sense as we cannot have negative time