Question

Help please.

Answer 1

whats up?

Answer 2

For the first one, I see that each time is the previous + 9
can you make an arithmetic sequence formula from it?

Answer 3

53=17+(53-11)9

Answer 4

I think thats how it works

Answer 5

So we want to make a general formula
It's on the second screenshot you sent
a_n = a_1 + (n-1)*d
we know the first term is 17
common difference is 9, so d = 9
so a_n = 17 + (n-1)*9