Answer:
C. greater than 11 and at most 23
For it to be non-linear, the rate of change cannot be constant. For the first table the rate is a constant 1 and the second table has a constant rate of -1. The 3rd and 4th tables have no constant rate and thus are non-linear.
The 4th table is increasing while the 3rd table is decreasing.
So the 3rd table, Set C, is the only non-linear negative association between x and y.
First step in such tasks, is to find what is between each number.
8-3 = 5
13-8 = 5
13-23 = 10
Based on only the first 2, and the last one as a backup we can assume that it jumps with 5 each time, starting on 3. Hence the open spot should be:
18.
The correct answer is 18. :)