Exercise 2-8 (Part Level Submission) 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

(b) 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.)

y =

$ MH

+

$