wouldn't this just be 2+2+2+2+10+10+10+10? or is it times I'm not sure but I hope this helps anyone to answer this fully :)
Answer:
Down below
Step-by-step explanation:
17: -15x
18: 12
19: -3
20: -52
22: -13
23: 31
26: -2
27: 56
28: 9
30: -10
I can help if I see the problem
I'm thinking 75% because the increase from 4 to 7 is 2
Common ratio = second term/first term = 480/768 = 5/8.