Not 100% sure but it might be B
This is under the binomial theorem. A binomial theorem is an equation that predicts the sequence when a binomial is raised to certain power. The general form of the equation is (a+b)^n. The equation for the binomial theorem would be
nCk a^(n-k) b^k, where k is the kth term of the expanded form, n is the nth power. The coefficient of the term in the binomial expansion is nCk or n!/k!(n-k)!.
There should be 45 pages for each topic
Answer:
The value of
is 
Step-by-step explanation:
Rearrange the terms so that all terms containing the variable are on one side of the equation and all constant terms are on the other side.
Subtract
from both the sides.

Answer:
The simple interest she earns is $80
p=500
r=8
t=2
Now,
SI=p×t×r/100
SI=500×2×8/100
SI=80