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10-21 Estimating a cost function using the Account Analysis Approach. Khan Sunil Enterprises, a software engineering firm, uses the account analysis approach to identify the cost behavior of production costs for its premium software. The following details relate to the company's activities for June 2019 in which it produced 350 units. Total Materials used in production *270,000 Labor costs 3134,000 Production facility costs 3103.000 Total production cost 3507,000 Variable