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Can you show me the steps to get this answer.

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Lawson Lumber uses the high-low method to estimate electricity cost, which varies in relation to machine hours. Based on the following data, how would the cost function be stated if 'X" is the number of machine hours? Electricity expense Machine hours June $495 410 July $500 400 August $750 900 September $610 500 a. $525 + $0.35 X b. $300 + $0.50 X C. $500 + $0.50 X d. $470 + $0.35 X