Question: * 74. A power company sets a monthly basic rate of $10, and charges 6 cents per 1kWh if the usage is less than 1200kWh,

* 74. A power company sets a monthly basic rate of $10, and charges 6 cents per 1kWh if the usage is less than 1200kWh, and 7 cents for every 1kWh in excess if the usage exceeds 1200kWh. Find the function of electricity rate E with respect to electricity consumption. Draw a graph of the function when 0x2000

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