Markup rate of 40% cost of retailer $25

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?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which of the functions graphed below has a removable discontinuity?