97.3k views
24 votes
Find a formula for the nth term of the arithmetic sequence a1=-17 a2=-12 a3=-7 a4=-2

User Dalzhim
by
3.2k points

1 Answer

10 votes

Answer:

Explanation:

Recursive formula

a1 = -17

a^n = a^n-1 + 5

Explicit formula:

a^n = -17 + (n-1) * 5

User Tyler Hackbart
by
2.8k points