Write an expression for X less than 56

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?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Which of the following is the result of expanding the series