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

		Machine Hours		Total Electricity Costs
January		500		$200
February		540		$280
March		340		$200
April		470		$210
May		670		$280
June		730		$340
July		330		$180
August		530		$260
September		250		$146
October		750		$340
November		850		$350
December		600		$330

(a)

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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

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(b)

Compute the total fixed cost of electricity. (Round answer to 2 decimal places, e.g. 52.75.)

Fixed cost

$enter the fixed cost amount in dollars

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(c)

Represent the electricity cost function in equation form. (Round answers to 2 decimal places, e.g. 52.75.)

Total cost = $enter a dollar amount MH + $enter a dollar amount

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(d)

What is the expected electricity cost when 750 machine hours are used? (Round answer to 2 decimal places, e.g. 52.75.)

Total cost

$enter the total cost amount in dollars

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