Idon't even know where to start on this problem?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

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 prime factorization of 23 ?me with this question