Please help me with detailed answer of question b

E5.3 (LO 1, 2), AN The controller of Norton Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs. Total Total Month Maintenance Costs Machine Hours January $2,700 300 February 3,000 350 500 March 3,600 690 4,500 April May 3,200 700 5,500 June 400 Instructions a. Determine the fixed- and variable-cost components using the high-low method. b. Prepare a graph showing the behavior of maintenance costs, and identify the fixed- and variable-cost elements. Use 100-hour increments and $1,000 cost increments