Plz, help me with this question?

For the function, f(x) = -5x 2, find f(-4).

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

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?