Question

An arithmetic sequence is represented by the explicit formula A(n) = 2 + 9(n - 1). What is the recursive formula?
A. A(n) = A(n - 1) + 9

B. A(n) = A(n - 1) - 9

C. A(n) = A(n - 1) + 2

D. A(n) = A(n - 1) - 2

Answer 1

B :-). If you try out A(1) = 2, A(2) = 11, A(3) = 20. The common factor is 9. So, A(n) = A(n-1) + 9.
typo: common difference.

Answer 2

so, it's A(n)= A(n-1) + 9.

Answer 3

A?

Answer 4

lol u answered ur own question :)

Answer 5

haha, yup i did

Answer 6

thanks :)

Answer 7

no problem :) glad to help