OKEASE HELP WITH MARK AS BRANLIEST

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?