Question

Find a formula for the nth term of the arithmetic sequence

First term 9
Common difference -2

Answer 1

Explanation:

Answer is an=-2n + 11

Hope this helps :)

Answer 2

9514 1404 393

Answer:

an = 9 -2(n -1)

Explanation:

The general formula for the n-th term of an arithmetic sequence with first term a1 and common difference d is ...

an = a1 +d(n -1)

Your sequence has a1=9 and d=-2, so the formula is ...

an = 9 -2(n -1)