Which method would be the best to solve the following system of equations? Graphing
Substitution
Elimination
None of these methods will work.

Can someone answer this question? : )

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?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much