Answer:
x = 11
Step-by-step explanation:
The answer is x equals -3
1) This sequence of numbers is arithmetic, because each number is the previous one divided by two.
2) the next number in the sequence is 125/2, which is 62.5
9 x 6 = 54
54 - 4 = 50
50 + 5 = 55
i think, your question isn't very clear
