Question

A sequence is defined by the formula f(n + 1) = f(n) – 3. If f(4) = 22, what is f(1)?

Answer 1

what does f(n+1)=f(n)-3 say in words?

Answer 2

like call f(n+1) a term we are looking at
then again we said f(n) is it's previous term
so in words this is actually saying?

Answer 3

Its multiplying a ratio?

Answer 4

it is saying that you can a term by taking it's previous term and subtracting 3 right
nothing about a ratio

Answer 5

so if you want to find the previous term given the term
then you would do term+3=previous term


so how do we get f(3)'s value

Answer 6

I would -3?

Answer 7

you would subtract 3 if you were trying to find the next term
but you are trying to find the previous term so you add 3

Answer 8

so f(3) =25

Answer 9

add 3 again to find f(2)