Achildren's pony ride at a zoo has ponies attached to a carousel pole in the center of a circle that the ponies walk around as children ride. suppose the diameter of the circle i 25 feet. how many feet does a pony walk to complete one trip around the circle?

Me because some of question i don’t understand

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?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?