Which of the following sets is closed under subtraction?
integers
whole numbers
natural numbers
irrational numbers

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Math question.. plz me .. best answer all