Use the GRASS method to solve the following problem. Show your work and round your answer to the nearest penny.
Phantom power use refers to the power used by a device in standby mode, such as a
game system that is not unplugged when not in use. A PS4 uses 300 W of power
while operating and 10W of power while turned off but plugged in. If you use it for 4
hours in a day, and the average unit cost of electricity is $0.125 per kWh that day,
calculate the total cost for the electricity it uses that day. (5 marks: 1 mark for each
correct step in the GRASS method