The Hard Rock Mining Company is developing cost formulas for management planning and decision-making purposes. The companys cost analyst has concluded that utilities cost is a mixed cost, and he is attempting to find a base that correlates with the cost. The controller has suggested that tons mined might be a good base to use in developing a cost formula. The production superintendent disagrees; she thinks that direct labor-hours would be a better base. The cost analyst has decided to try both bases and has assembled the following information:

Quarter	Tons Mined	Direct Labor-Hours	Utilities Cost
Year 1:
First	34,000	6,900	$ 69,000
Second	21,000	4,900	$ 64,000
Third	39,000	5,900	$ 79,000
Fourth	31,000	7,900	$ 94,000
Year 2:
First	37,000	13,800	$ 119,000
Second	44,000	14,700	$ 124,000
Third	49,000	11,800	$ 104,000
Fourth	47,000	14,800	$ 139,000

1-b. Using the least-squares regression method, estimate the variable utilities cost per ton mined and the total fixed utilities cost per quarter. Express these estimates in the form Y=a+bX. (Round the Variable cost per unit to 2 decimal places and Fixed Cost to the nearest whole dollar amount.) 2-b. Using the least-squares regression method, estimate the variable utilities cost per direct labor-hour and the total fixed utilities cost per quarter. Express these estimates in the form Y=a+bX. (Round the Variable cost to 2 decimal places and Fixed Cost to the nearest whole dollar amount.)