Armour Limited has presented the following information for the past eight months operations:

Month	Units	Total Cost
April	4,850	$	18,700
May	4,050	$	16,600
June	2,250	$	12,800
July	3,650	$	14,900
August	4,350	$	17,700
September	5,050	$	21,480
October	4,750	$	18,200
November	4,250	$	17,400

a. Using the high-low method, calculate the fixed cost per month and variable cost per unit. (Round variable cost to 2 decimal places.)

b. What would total costs be for a month with 3,850 units produced?