please help me with this im not good in math i have no brain
Question 4(Multiple Choice Worth 4 points)

Erica purchased adult and youth tickets for a movie. She bought x adult tickets for $7 each and y youth tickets for $5. Write an expression that can be used to show the total cost, C, of all tickets.


C = 7x + 5y

C = (7 + 5)x

C = (7 + 5)(x + y)

C = 7y + 5x