Crane, Inc., has collected the following information on its cost of electricity:

	Machine Hours		Total Electricity Costs
January		500		$240
February		540		$310
March		370		$190
April		470		$210
May		670		$290
June		710		$340
July		330		$170
August		510		$260
September		230		$118
October		760		$320
November		860		$370
December		600		$330

Identify the high and low points.

		Machine Hours		$
High point		enter the machine hours for high point		$enter the high point in dollars
Low point		enter the machine hours for low point		$enter the low point in dollars

Using the high-low method, compute the variable cost of electricity per machine hour. (Round unit cost to 2 decimal places, e.g. 52.75.)

Variable cost

$enter the variable cost per machine hour in dollars per machine hour