An outdoor security light uses 824 kWh of energy per year. If the yearly cost for the light is $70.04, what is the charge per kWh?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Using elimination, what is -4x+2y=-12 4x+8y=-24

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters