Aps4 uses 8.8 watts when on stand-by mode. how much carbon dioxide is emitted into the atmosphere by using this electricity?

8.8 watts × 294 hours = 2587.2 Wh or 2.5872 kWh.

A. total power usage PS4 in a week = 8.8 watts x 21 hrs/day x 7 days/week
                                                          = (1293.6 watt.hr/week) / (1 kW/1000w)
                                                          = 1.29 KW hr/ week
b. carbon emission = 2.1lb/KW
                               = 1.29 KW x 2.1lb/KW
                               = 2.71 lb

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1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post