Akilowatt-hour is a unit of measure for consumable energy. a kilowatt-hour, written kwh, is equivalent to using 1,000 watts of power in 1 hour. the table above shows the per-kwh rates charged by several electric companies in new england. according to the united states energy information administration, an average household in new england uses between 530 and 730 kwh of energy per month. which inequality represents how much less in energy costs a household would pay per month if it uses company d as its energy supplier, than it uses company b?

  C.  13.78 ≤ x ≤ 18.98

Step-by-step explanation:

The rate for Company B is show as 17.4 cents per kWh. That for Company D is shown as 14.8 cents per kWh. The savings obtained by using Company D is ...

  17.4 - 14.8 = 2.6 . . . . cents per kWh

Then to find the savings a household would experience, we multiply this savings rate by the monthly usage rate of the household.

  530 kWh × $0.026/kWh = $13.78

  730 kWh × $0.026/kWh = $18.98

So for household usage between these energy values, the savings (x) using Company D will satisfy ...

  13.78 ≤ x ≤ 18.98

step-by-step explanation:

if x = 2 you have to find x to finish the problem