A formal short button manufacturer has provided its estimated sales for the upcoming year
A Box of bottons contains 100 shirt buttons. Other relevant data is given below
Month	# of Boxes	Total
	sold	Cost
1	100	$ 85,000
2	250	$ 185,000
3	280	$ 210,000
4	300	$ 250,000
5	370	$ 280,000
6	670	$ 440,000
7	550	$ 350,000
8	570	$ 350,000
9	500	$ 340,000
10	490	$ 330,000
11	250	$ 175,000
12	310	$ 225,000
Solve by Least-squares Regression Method ONLY AND COMPUTE THE FOLLOWING
Requirements:
(i) Variable cost per Box= $
(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