What is 76.78 rounded to the nearest whole number?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

What is the standard form of -5x^2+2x^4-11+x^3+3x

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?