Grawburg Incorporated maintains a call center to take orders, answer questions, and handle complaints. The costs of the call center for a number of recent months are listed below: April May June Calls Taken 6,284 6,253 6,294 Variable cost Fixed cost Call Center Cost $ 68,127 $ 67,915 6,292 6,255 6,266 6,311 6,301 July August September $ 67,977 October $ 68,294 November $ 68,250 Management believes that the cost of the call center is a mixed cost that depends on the number of calls taken. $ 68,199 $ 68,172 $ 67,918 Required: Estimate the variable cost per call and fixed cost per month using the least-squares regression method. (Round the "Variable cost" to 2 decimal places and the "Fixed cost" to the nearest dollar amount.) per call per month

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