# If your computer uses 3.5 A at 110 V, how much will it cost to use the computer for 3 hours a day, seven days a week for two weeks? Assume that the cost of electricity is $0.09 for every kW•h of energy.

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With steps please

With steps please

##### 1 Answer

OK, these 3 questions are part of a series, if I help with this one hopefully you will be able to apply the same logic to the others?

#### Explanation:

First power,

Secondly we need to convert the power to an energy using

Finally we need to convert the energy into a price, given that each kWh costs 9 cents.

OK, off we go!