Question

The fourth term of a sequence is 14. Each term of the sequence is 8 less than the previous term. Which recursive formula represents the situation?

A. an=-8an-1;a1=14
B. an=an-1-8;a1=14
C. an=-8an-1;a1=38
D. an=an-1-8;a1=38

Answer 1

The answer is

D

I just took the test hope this helps :)

Answer 2

Fourt term: 14

Third term: 14 + 8 = 22

Second term: 22 + 8 = 30

First term: 30 + 8 = 38

Then you can find any term as the previous term minus 8.

=> An = A(n-1) - 8, and A1 = 38.

That is the option D.