14- Sales salaries and commissions are $17,000 when 135,000 units are sold; and $13,000 when 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? O 19.250 O 18.200 O 18.550 18.220 18.000 o 18.350