Explanation
Step 1
Let x represents the cost for the students ticket
Let y represents the cost for the adult ticket
1)A group of 4 students went to the movie theater. They each bought a ticket for $x and spent $10.50 each on snacks
then
[tex]\begin{gathered} \text{total}=4x+4(10.50) \\ total=4x+42 \end{gathered}[/tex]2)A group of 3 adults went to the movie theater and paid twice as much for each of their tickets as each student. The group of adults also spent $10.00 each on snacks