Coronado Industries's activity for the first three months of 2022 are as follows: Machine Hours Electrical Cost January 2400 $4500 February 2900 $5500 March 3200 $5700 Using the high-low method, what is the variable cost per machine hour? O $1.45 O $1.50 O $2.38 O $1.89 Save for Later Attempts: 0 of 1 used