Estimate the unit rate is 12 pair of socks sale for $5.79

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?

How to do this , and can some one explain

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11