At the high level of activity in November, 8000 machine hours were used and power costs...

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At the high level of activity in November, 8000 machine hours were used and power costs were $21000. In April, a month of low activity, 2000 machine hours were used and power costs were $9300. Using the high-low method, the estimated fixed cost component of power costs is O $9300. O $5400. O $21000. O $15600. At the high level of activity in November, 8000 machine hours were used and power costs were $21000. In April, a month of low activity, 2000 machine hours were used and power costs were $9300. Using the high-low method, the estimated fixed cost component of power costs is O $9300. O $5400. O $21000. O $15600.