Inspection costs at one of Ratulowski Corporations factories are listed below:

Units Inspection

Produced Cost

April 777 $10,176

May 807 $10,404

June 798 $10,355

July 835 $10,665

August 822 $10,542

September 795 $10,313

October 805 $10,409

November 853 $10,795

December 796 $10,310

Management believes that inspection cost is a mixed cost that depends on units produced.

Using the high low method, create a cost formula for inspection cost. Round variable cost per unit (b) to two decimal places. Round fixed costs (a) to the nearest dollar.