An oil drilling company drills the same distance each day for 5 days. they started at an elevation of 121.175 feet and ended at an elevation of -246.875 feet. which equation can be used to find x, the distance they drilled each day? a. b. c. d.

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18