What is the x-coordinate of the point that divides the directed line segment from K to J into a ratio of 1:3?
X =
m
m+n
(x2 – x1) + x1
-1
3
7
11

Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999. the drive is currently serving a request at cylinder 2,150, and the previous request was at cylinder 1,805. the queue of pending requests, in fifo order, is: 2069, 1212, 2296, 2800, 544, 1618, 356, 1523, 4965, 3681