The following information is available regarding the total manufacturing overhead of Bursa Mfg.Co. for a recent four-month period. Machine- Manufacturing Hours Overhead January 5, 10e $ 300,000 February 3,280 224,000 March 4,900 263,800 April 2,780 180, eee a-1. Use the high-low method to determine the variable element of manufacturing overhead costs per machine-hour (Round your answer to 2 decimal places.) a-2. Use the high-low method to determine the fixed element of monthly overhead cost. (Round "Manufacturing overhead cost" to 2 decimal places.) b. Bursa expects machine-hours in May to equal 5,300. Use the cost relationships determined in part a to forecast May's manufacturing overhead costs (Round "Manufacturing overhead cost" to 2 decimal places.) c. Suppose Bursa had used the cost relationships determined in part a to estimate the total manufacturing overhead expected for the months of February and March. By what amounts would Bursa have over- or underestimated these costs? (Round "Manufacturing overhead cost" to 2 decimal places.) per machine hour a-1. Manufacturing overhead cost a-2 Fixed element of monthly overhead cost b. Estimated manufacturing overhead cost Amount a Fobruary March