Slonaker Inc. has provided the following data concerning its maintenance costs:

Machines-Hours Cost

October 5,809 $30,388

August 5,717 $30,078

Management believes that maintenance cost is a mixed cost that depends on machine-hours.

Using the high-low method, variable cost per machine-hour is:

The total cost when the activity is 6,000 machine-hour is:

Using the high-low method, fixed cost per month is: