4 to 7 equals 21 to what

Can anyone me with 32,33,36,37,and 40.

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?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?