answer the question please

a) How many kilowatt-hours does the family use in the first T hours of a day (t = 0 to t = T)? b) How many kilowatt-hours does the family use in the first 4 hours of the day?JO Electrical energy use. The rate at which electrical energy is used by the Ortiz family, in kilowatt-hours (kW-h) per hour, is given by K(t) = 10te-, where t is time, in hours. YA 4- K(t) = 10te 2 2 4 6 8