MC Qu. 157 Cadavieco Detailing s cost formula for its materials ... Larance Detailing's cost formula for its materials and supplies is $1,990 per month plus $4 per vehicle. For the month of November, the company planned for activity of 94 vehicles, but the actual level of activity was 54 vehicles. The actual materials and supplies for the month was $2,250. The materials and supplies in the planning budget for November would be closest to: