Help pls show work if needed also will give brainlist!

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 final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.