Sales salaries and commissions are $17,000 when 135,000 units are sold; and $13,000 when - 14 85,000 units are sold. Using the cost formula of the high-low method, what Sales salaries and ?commissions would you expect to be incurred if 150,000 units were sold 18,350 O 18,220 O 18,000 O 18,550 O 19,250 0 18,200 O Computer depreciation expense (based on straight-line method) paid by phosphate Co.-15 headquarter in Amman is classified as (most correct one) Manufacturing overhead o Fixed cost o Indirect material o Both variable & period costo Nothing mentionedo ) Variable cost o Both fixed & period costo