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label Mathematics
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Number of kilowatt-hours       Total cost (dollars)

1,250                                   150.00

1,650                                   198.00 . A use information to find the unit rate in dorllars for each company. B find a total cost in dollars of buying 2,375 kilowatt-hours.

Apr 7th, 2015

A.  the unit rate of the first company is

150 / 1250 = $0.12 per kilowatt-hour

the unit rate of the second company is

198 / 1650 = $0.12 per kilowatt-hour

They both charge the same amount

B.  The total cost of buying 2,375 kilowatt-hours is

(0.12)(2375) = $285


Apr 7th, 2015

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Apr 7th, 2015
Sep 20th, 2017
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