Gourmando will pay $2 to play Digit's game with the spinner. If he spins cured pasta & bear, he wins nothing: If he spins baked cucumber & lime mutton, he wins $2; if he spins poached fennel & lemon
alligator, he wins $3; If he spins pressure-cooked mushroom & garlic chicken, he wins $2.50; if he spins
praline wafer, he wins $7; if he spins gooseberry & passion fruit cheesecake, he wins $2.50; and finally, if he
spins oven-baked apple & lavender calzone, he wins nothing.
Determine whether the game is fair by finding the expected value (or expected cost) for Digit's game.
Which answer shows the correct formula for finding the expected value?