7.8 should be it, i am so sorry if its wrong hope it helps if its correct!
Answer:
y = x - 3
Step-by-step explanation:
4y + 3 = 3y + x
y + 3 = x
y = x - 3
Step-by-step explanation:
tricky, as the sequence does not define the input values.
by we can assume that the corresponding input values are 1, 2, 3, 4, 5, ... as it is usual for a sequence.
in that sense, b is the correct answer.
Answer:

Step-by-step explanation:
Look at the image below ↓