Answer:
c
because it is
Step-by-step explanation:
I'd be glad to help but i don't know the question
Replace N with 6
6(6+1)(2(6)+1) / 6
(6*7*13) / 6
546 / 6 = 91
Answer is C
Answer:
b
Step-by-step explanation:
my teacher went over the same on with me