A round sea turtle egg measures about 0.5 cm in diameter. What is the surface area of an sea turtle's egg in square centimeters?

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?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Can some one explain this i got sent this. is this a threat i’m scared