The correct answer is b. -14
:)
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 is :
cos⁻¹[(-1-4√7)/(√17, √8) = 173.33° ≈ 173°
5,000,000 is the answer.
5,000÷0.001=5,000,000
20 x 18 x 5= 1,800
20 times 18 equals 360, then you mutiply 5 and get 1,800