Question

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Answer 1

Answer: $\bold{(D)\ a_n=7n+10}$

Step-by-step explanation:

The recursive rule for an arithmetic sequence is: $a_n=a_{n-1}+d$

So, we know that d = 7.  It is given that $a_1=17$

The explicit rule for an arithmetic sequence is: $a_n=a_1+d(n-1)$

$a_n=17+7(n-1)\\\\.\quad=17+7n-7\\\\.\quad=7n+10$