I would say 465 since they go back and forth twice which is 155 x 3
We must take into account the following change of units:

Applying the change of units we have that the electric consumption for 1 year is given by:

Then, the total cost is given by:
Answer:
the cost of operating a 3.00-w electric clock for a year is:
$ 2.3652
Answer:9
Step-by-step explanation:
dk
800+16x=720+21x
80+16x=21x
80=5x
X=16
So 16 hours :)