Which is the greatest whole number that belongs to the solution set of this inequality?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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?

Find the solution of this system of equation -7x+y=-20 9x-3y=36