Are the expressions 12m - m and 12m equivalent?

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?

Use the distributive law to multiply. 3(4x + 5y + 6)

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.