Add 5 to me. then divide by 7. if you add 12 and then subtract 7, you get 10. what number am i?

How do i do this activity, is appreciated

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?

Iwill give you ! what is the measure of ∠v ?