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A manufacturer situated in Washinton, USA manufactures plastic pipes which is used by
plumbers in a high-rise apartments to supply tank water to all residential houses.
Number of pipes sold and and its Total cost per month are given below
Month	# of Pipes	Total
	sold	Cost
1	175	$ 165,000
2	250	$ 200,000
3	300	$ 250,000
4	300	$ 250,000
5	350	$ 265,000
6	700	$ 450,000
7	500	$ 320,000
8	570	$ 350,000
9	500	$ 340,000
10	490	$ 330,000
11	230	$ 150,000
12	400	$ 275,000
Solve by Least-squares Regression Method ONLY AND COMPUTE THE FOLLOWING
Requirements:
(i) Variable cost per Pipe= $
(ii) Fixed cost per month = $
(iii) Semi Variable costs per month = $
(iv) Semi Fixed costs per month = $
REMEMBER NOT TO SOLVE BY HIGH-LOW METHOD
I ALREADY GOT INCORRECT ANSWERS