D Question 21 2 pts Given the following costs and activities for Downing Company electrical costs, use the high-low method to calculate Downing's variable electrical costs per machine hour Costs Machine Hours April $11.700 15,000 May $13,200 17,500 June $11,400 14,500 O $2.08 O $6.00 O $0.60 O $1.20 Question 22 2 pts Given the following cost data, what type of cost is shown? otal Cost of units 3,500 4,000 4,500 5,000 O mixed cost O variable cost O fixed cost O none of the above