B. X,2X,3X cuz the sum of X and 2X is 3X
56 really to easy ...........
can you get a clearer picture pls
the bottom is to blurry
Answer:
D. A(n) = P + (n-1)i*P
Step-by-step explanation:
The formula to calculate the simple interest is:

Replace i by
, then
SI = Pni
where n is the number of years.
So, for n-1 years, the simple interest is:
SI = P(n-1)*i
The Total amount is:
A(n) = P + (n-1)i*P