help part A plz thank you

Natural Fragrance, Inc, began operation on January 1, 2012 The company produces a hand and body lotion in an eight ounce bottle called Eternal beauty The lotion is sold wholesale in 12 bottle cases for $80 per case. There is aselling commission of $16 per case. The January direct material, direct labor, and factory overhead costs are as follows: The management of Natural Fragrance, Inc., wishes to determine the number of case required to bread even per month, The utilities cost, which is of factory overhead, is a mixed cost, The following information was gathered from the first six month of operation regarding this cost: Determine the fixed and variable portion of the utility cost using the high-low method Determine the contribution margion per case. Determine the fixed costs per month, including the utility fixed cost from part(1). Determine the break-even number of cases per month