In the formula, w represents the number of what used by an appliance, tv represents the time, and hours, the appliances used, and sea represents the cost, incense, per kilowatt hour used. breonna uses two appliances frequently the electric provides charges brianna's family $.10 per kilowatt hours used on a typical day breonna uses her computer for three hours and her hair drive for 10 minutes what is the total cost of using both appliances for six days show your work total cost using both appliances for six days is what