Answer:
n_n = n_n-1 + 7
Explanation:
All it does is it adds 7 to the previous term
n = n_(previous)+7
nth term = 7n - 2
a = first term = 5
d = common difference = second term - first term
= 12 - 5 =7
d = 7
a + (n-1)d
= 5 + (n -1)7
= 5 + 7n - 7 {add like terms}
= 7n - 2
7.6m questions
10.2m answers