Suzys Cool Treatz is a snow cone stand near the local park. To plan for the future, the owner wants to determine her cost behavior patterns. She has the following information available about her operating costs and the number of snow cones served.

Month	Number of snow cones	Total operating costs
January	3,500	$5,000
February	3,800	$4,800
March	5,000	$6,800
April	3,600	$5,450
May	4,700	$6,200
June	4,250	$5,950

Suzy uses the high-low method to determine her operating cost equation. What are her estimated costs at 4206 snow cones? When calculating the variable cost per unit, round your answer to two decimal places before completing your calculations. Do not use dollar signs, commas or decimals in your answer. Input your answer to the nearest whole number.