Question

Fimd the 12th term of this sequence:

5,12,19,...

A. 65
B. 89
C. 78
D. 82

Answer 1

Because we're just adding seven to this arithmetic sequence the twelfth term can be found by multiplying 7 by 12-the current term number and adding that to the current term.

`5 \ is \ the \ first \ term \ or \ otherwise \ known \ as \ n = 1 \\ 12-1 \ to \ get \ the \ amount \ of \ terms \ in \ between \\ 11 * 7 \ to \ find \ the \ amount \ you \ need \ to \ add \ to \ 5 \\ 77 + 5 = 82`

Answer 2

The answer would be 82