Stein Corporation wants to find an equation to estimate some of their monthly operating costs for the operating budget for 2021. Please show the work and explain how you got the answer. Please & Thank you

Stein Corporation wants to find an equation to estimate some of their monthly operating costs for the operating budget for 2021 . The following cost and other data were gathered for 2020 : Click the icon to view the cost and other data) Read the requirements. Requirement 1. Which of the preceding costs is variable? Fixed? Mixed? Explain. Requirement 2. Using the high-low method, determine the cost function for each cost. Begin by selecting the general formula that represents the linear cost function for each cost. Requirements 1. Which of the preceding costs is variable? Fixed? Mixed? Explain. 2. Using the high-low method, determine the cost function for each cost. 3. Combine the preceding information to get a monthly operating cost function for the Stein Corporation. 4. Next month, Stein expects to use 430 machine hours, have 110 employees, and ship 9,900 units. Estimate the total operating cost for the month. Data table