E9a. Roll in the Hay, Inc., provides harvesting services. In June, the business earned $3,600 by cutting, turning, and baling 6,000 bales. During the month, the following costs were incurred: gas, $900; tractor maintenance, $360; and labor, $1,200. Annual tractor depreciation is $3,000. What was the company's cost per bale?What was its revenue per bale? Should the price per bale be increased?