Jennifer is playing a game in which she will choose a ball from a bag containing 10 balls, each of which is labeled with a different integer from 1 to 10. If she chooses a ball labeled 1. 2. or 3, she will Ase 10 points. If she chooses a bull labeled 4 or 5, she will gain 5 points. If she chooses a ball labeled 6, 7, 8, 9or 10, she will gain 20 points. What is the expected value of the number of points Jennifer will gains by choosing a ball at random from the bag? points