Is this a functional relationship?how do you know?​

If jaime wants to find 60% of 320, which table should he use?

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?

What is the circumference of a circle with an area of 50.24 cm²?