assuming you mean
where 
ok, notice a pattern in the exponent





hum, so it goes 1,2,3,4, then repeats
ok, so every 4, the cycle repeats
how far up is 77 from a multipule of 4?
4*19=76
76 is 1 away from 77
so 

the answer is B
Answer: X=3
Step-by-step explanation:
The answer is C . cube 2
Explanation:
Using PEMDAS its Parentheses, exponents ,multiple then divide and add , subtract
Answer:
l = 100 / 8
Step-by-step explanation:
The standard formula for calculating area is bh = a.
Plug in 8 for our width.
8l = 100
Divide 8 on both sides.
l = 100 / 8.