Add the watts from the TV(150) plus the cable box when on(140) and off but plugged in(18). Then it will give you an answer of 308 watts.
Part C: 308 watts
A Watt is the unit of electrical power equal to one ampere under the pressure of one volt. One Watt is a small amount of power. Some devices require only a few Watts to operate, and other devices require larger amounts.
What watts mean?
power
A watt (W) is a unit of measurement of power. Watts therefore refer to the power of your device.
Examples: an incandescent lamp has a power of 60 W. your microwave oven has a maximum power of 900 W.
To learn more about A watt, refer
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