Q:

A:

because...

*********************************************************
Q:

A:
Answer:
13
Step-by-step explanation:
The closest multiple of 6 less than 80 is 13.
13×6=78
How many are left over?
80 - 78 = 2
remains, and this can be simplified to 
13
Hope this helps!! (I know it sounds a little complicated but it's easy to understand it with practice :)
Positive Integer factors of 196 = 2, 4, 7, 28, 196 divided by 2, 2, 7, 7, gives no remainder. If we put all of it together we have the factors 2 x 2 x 7 x 7 = 196. It can also be written in exponential form as 22 x 72.
(I got all of this from google so i hope it’s right!)
The answer is B
a1= 13;an-1+2