Company has presented the following information for the past eight months operations

	Machine-Hours	Maintenance Cost
March	4,440	$50,950
April	4,431	$50,877
May	4,412	$50,696
June	4,460	$51,113
July	4,414	$50,711
August	4,433	$50,900
September	4,443	$50,976
October	4,415	$50,730
November	4,391	$50,530

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

Using the high-low method, calculate

a. Variable cost per machine-hour

b. Fixed cost per month

c. What would total costs be for a month with 4,000 machine-hours?