Question

Find an equation for the nth term of the arithmetic sequence.

-17, -13, -9, -5, ...

Answer 1

do you know the formula?

Answer 2

You must find the distance first,
\[-13-(-17)=4\]And apply the usual arithmetic formula,
\[a_n=a_0+d(n-1)=-17+4(n-1)\]

Answer 3

I know, so far this is what I've obtained: an = -17 + 4

Answer 4

Wait, is it an = -17 + 4(n - 1)

Answer 5

Yes :)

Answer 6

something like that