A casino offers a game wherein a player can roll one six sided
die. If the player rolls a 5, they win. If the player rolls a 1,2,
3, 4, or 6, they lose. If a player bets $5.00 and wins, they will
be paid out an additional $20.00. If they lose, they lose their
initial $5.00. Find the expected value of the $5.00 bet.
Enter your answer rounded to the nearest cent and don't forget,
expected values can be negative!