The following information is available for a company's otillty cost for operating its machines over the test four month Utility cost $5,580 $ 7,160 $8,100 $3,610 Month January February March Machine houra 1.030 1,930 2.660 7.30 Using the high low method, the estimated variable cost per machine hour for utilities is: Me Choice 56 57 $2.33 $3.05 $495