r1ch412d
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Homework Statement
What does it cost in cents to leave a 1800 Watt electric oven on for 7 hours? Assume that you pay 10 cents for every kilowatt hour which you use.
Homework Equations
Well i don't know if I am supposed to use P=E/t. i don't know how I am supposed to use it
The Attempt at a Solution
Do i not convert 1800 Watts to 1.8 Kilowatts, then multiply 1.8 by 7 hours..which is 12.6 then by .10 cents, which makes the answer 1.26?
It is incorrect though.Thanks for your help.