13) Define a variable, write an equation, and solve the problem. Adult's tickets to a play cost $7 dollars and students' tickets cost $11 dollars. If 210 tickets were sold and a total of
$1830 was collected. How many students tickets were sold?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?