1. What is the relationship between: (a) time and energy consumption; and (b) appliance's power rating and the cost of energy consumption?
2. What appliances contributes most to this monthly electric bill? What are the factors/variables these appliances have that it contributes immensely to this electric bill? How to manage the usage of appliances in the household to minimize the electric bill?

Daily Monthly Power Energy Energy Cost Appliance Usage Used Cost of Energy (W) Usage per Kwh (h) (h) (kWh) (Php/kWh) Consumption (Php) Refrigerator 100 7 196 19.6 167.35 TV 85 3 84 7.14 60.96 Electric Heater 1,500 0.0833 2.3324 3.4986 29.87 Rice Cooker 400 0.5 14 5.6 47.82 Electric Fan 50 3 84 4.2 35.86 Water Dispenser 330 0.0333 0.9324 0.307692 2.63 Cable Modem 5 6 0.03 8.538511658 0.26 Printer 19 2 0.038 0.32 Laptop Charger 650 3 84 54.6 466.2 Washing Machine 330 4 1.32 11.27 Light Bulb 5 4 112 0.56 4.78 Light Bulb 5 5 140 0.7 5.98 Total 97.594292 833.3