Answer:
The number of students on each bus is;
[tex]52[/tex]And the expression is;
[tex]6X+4=316[/tex]Explanation:
Let X represent the number of students on each bus.
Assuming the buses were filled with the same number of students.
Given that all 6 buses were filled and 4 students had to travel in cars.
We can write the expression as;
[tex]6X+4[/tex]Equating to the total number of students;
[tex]6X+4=316[/tex]Solving for X;
[tex]\begin{gathered} 6X+4=316 \\ 6X=316-4 \\ 6X=312 \\ \text{divide both sides by 6;} \\ \frac{6X}{6}=\frac{312}{6} \\ X=52 \end{gathered}[/tex]Therefore, the number of students on each bus is;
[tex]52[/tex]