Assuming the line intersects the y-axis at 50 and using the


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

Machine Hours Total Electricity Costs
January 625 $280
February 700 $290
March 500 $265
April 425 $200
May 450 $248
June 300 $170
July 375 $180
August 550 $240
September 575 $260
October 280 $150
November 430 $215
December 200 $100

(a) Assuming the line intersects the y-axis at $50 and using the September activity levels calculate the equation of the line that would be drawn for a scattergraph. (Round variable cost to 2 decimal places, e.g. 15.25 and fixed cost to 0 decimal places, e.g 15.)

(b) What is the expected electricity cost when 425 machine hours are used? (Round answer to 2 decimal places, e.g. 125.25.)

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Accounting Basics: Assuming the line intersects the y-axis at 50 and using the
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