Answer: it triples by 3 so 15,45, 135
Step-by-step explanation: this is by 3 because it goes on by 15,45,135
Answer:
Step-by-step explanation:
c.d. d=8-3=5

I'm I am so sorry I haven't done this hey sorry
Answer:
9÷5=9/5
Step-by-step explanation:
N-1(-1/2) is the formula because the sequence is taking half of the previous number and changing its sign