The customer service department at Mall Mart gathered the following data for the first six months of its fiscal year:

Using the high/low estimation method:

a) Determine the cost estimation equation.

b) Estimate the total department costs during a month where 18,500

customers are serviced.

c) Estimate the total department cost during a month where 35,000 customers are

serviced.

July August September October November Decem ber Department Costs $350,500 276,360 281,930 337,865 312,120 358,775 umber of Customers 28,450 14,240 15,970 26,580 23,230 29,790