Can you please help me out

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?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute