1D M Wu. 7-13 Lourington vetaining 5 COST TO MUID TOT ILS materiais ... Courington Detailing's cost formula for its materials and suppiles is $2,420 per month plus $9 per vehicle. For the month of August, the company planned for activity of 63 vehicles, but the actual level of activity was 33 vehicles. The actual materials and supplies for the month was $2,840, The activity varlance for materials and supplies in August would be closest to: 400 Multiple Choice $147 $270 U 3270F $147