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. :)
Answer:
Step-by-step explanation:
(12+9x) - (6+3x) + 6x + -3
6+3x + 6x+-3
3+ 9x
I’m pretty sure the answer is D.