The Crater Manufacturing Company recorded overhead costs of $14,192 at an activity level of 4,250 machine hours and $8,760 at 2,310 machine hours. The records also indicated that overhead of $9,735 was incurred at 2,610 machine hours. What is the variable cost per machine hour using the high-low method to estimate the cost equation? $2.80 $3.34. O $2.72 O $3.73