Island Enterprises has presented the following information for the past eight months operations: Nonth April Units Total Cost 5,000 $19,000 4,200 $16,900 June 2,400 $13,100 July 3,000 $15,200 August 4,500 $18,000 September 5,200 October November $22,200 4,900 4,400 $18,500 $17,700 a. Using the high-low method, calculate the fixed cost per month and variable cost per unit. (Round variable cost to 2 decimal places.) Fixed Cost Per Month Variable Cost $ 3.50 Per Unit b. What would total costs be for a month with 4,000 units produced? (Do not round your intermediate calculations.) Total Costs