Answer:

Step-by-step explanation:
To find the scale, we write a ratio of
and simplify.
We know
.
We simplify to 
I would think it is round each amount to the nearest thousand dollars.
Answer:
y = x + 3
Step-by-step explanation:
This is because the number is increasing by three each time and if you substituted the variable x with a number the answer is true.
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