Given the following information determine the equation for t
Given the following information, determine the equation for the unit formulation. (Round intermediate calculations to 4 decimal places)
 Possible answers:
 a) Y = (900)(X) 0.9000
 b) Y = (900)(X) -0.2109
 c) Y = (900)(X) 0.6931
 d) Y = (900)(X) -0.1521
| Unit Number (X) | Unit Cost (Y)$ | 
| 1 | 900.00 | 
| 2 | 777.60 | 
| 3 | 713.87 | 
| 4 | 671.85 | 
Solution
Using a log-log linear regression,
slope = exponent of x = -0.2109
 constant = 10^intercept = 10^2.954 = 900
Thus,
y = 900 x ^ -0.2109 [ANSWER, OPTION B]

