Coach You Problem 3 Monthly production costs in Sweet Cheezus Company for two levels of production are as follows. Cost Indirect labor Supervisory salaries Maintenance 2,000 Units $10,000 5,000 4,000 4,000 Units $20,000 5,000 6,000 Indicate which costs are variable, fixed, and mixed, and give the reason for each answer. Coach You Problem 4 Spruce Springsteen Cleaning Company accumulates the following data concerning a mixed cost, using miles as the activity level. Miles Driven Total Cost Miles Total Driven Cost January 8,000 February 7,500 $14,150 13,500 March 8,500 $15,000 April 8,200 14,490 Compute the variable- and fixed-cost elements using the high-low method.