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Zerbel Company, a wholesaler of large, custom-built air-conditioning units for commercial buildings, has noticed considerable fluctuation in its shipping expense from month to month, as shown below:

MonthUnits

ShippedTotal Shipping

ExpenseJanuary10$8,891February13$10,866March11$9,711April8$7,420May9$8,372June12$10,521July16$13,300

Required:1.Using the high-low method, estimate the cost formula for shipping expense.

Zerbel Company, a wholesaler of large, custom-built air-conditioning units for commercial buildings, has noticed considerable fluctuation in its shipping expense from month to month, as shown below: Units Shipped Total Shipping Month Expense January 10 $ 8,891 February 13 $10,866 March 11 9,711 April OO $ 7,420 May $ 8,372 June 12 $ 10,521 July 16 $13,300 Required: 1. Using the high-low method, estimate the cost formula for shipping expense. Y = + X