In a direct variation equation f(x) = 6 when x = 4. what is the direct variation equation a-f(x)=6x b-f(x)=4x c-f(x)=1.5x d-f(x)=0.67x

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?

If 3x+8=3x+8 is it one solution or no solution

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?