substitute the length of the sides (9 in,12 in, m) into the pythagorean theorem. then, find the length of the missing side m

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

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?

This is so hard and it’s for a test