What is the natural exponential function.

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?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

If you could answer these your a life saver