At the high level of activity in November, 8000 machine hours were run and power costs were $18000. In April, a month of low activity, 2000 machine hours were run and power costs amounted to $9000. Using the high-low method, the estimated fixed cost element of power costs is O $12000. O $6000. O $18000. O $9000.

At the high level of activity in November, 8000 machine hours were run and power costs were $18000. In April, a month of low activity, 2000 machine hours were run and power costs amounted to $9000. Using the high-low method, the estimated fixed cost element of power costs is $12000. $6000. $18000. $9000