Disculpen alguien sabe de algun buen curso o tutorial para saber calculo?

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

What could explain what happened when the time was equal to 120 minutes

Find the values of y: 3y^3(y^2+ 2/3y)=0