What is the speed of a jet plane that flies 7200km in 9 hours

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

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 value of x in the this question ?