Posted by Jenny 2 on Friday, May 2, 2014 at 6:34am.
The instruction booklet for a DVD player says that the player uses about 0.4 kilowatt of electricity per hour. If electricity costs $0.20 per kilowatt per hour. How much does it cost to run the player for an hour?

Math 2  Reiny, Friday, May 2, 2014 at 8:07am
what is .4(.20) ?
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