ABC Company would like to estimate the variable and fixed components of its electrical costs and has compiled the following data for the last five months of operations. Electrical Cost August September October November December Machine Hours 1,000 900 1,500 2,000 1,300 $1,550 1,510 1,750 1,950 1,670 Using the high-low method of analysis, compute the estimated variable cost per machine hour for electricity (round to two decimals)