Answer:
The second and the third one
Step-by-step explanation:
50 students participated in the survey, if you need help with 2, 3, & 4, just comment and ask
72/6 = 12
The awnser is x = 12
First list all the factors of 12;
1, 2, 3, 4, 6, 12
now let's see which ones are multiples of 3;
3, 6, 12
so all we have left are numbers 1, 2 and 4.
hope that helps, God bless!