Salon de Beauty, a local hair salon, incurred the following costs last month. (Hint: Treat Salon utilities as Variable cost) Salon rent $ 1,800 Salon utilities (electric and water) $ 810 Hairstylists salaries $ 5,500 Hairstylists commissions (a percentage of sales) $ 3,800 Depreciation on fixtures and equipment $ 810 Shampoo and conditioner (only a small amount is used on each customer) $ 270 Insurance $ 1,050 Advertising $ 2,300 Store managers salary $ 3,800 Hair dye and perm kits (each dye job or perm uses one kit) $ 390